The Open Mind

Cogito Ergo Sum

Archive for the ‘Gene pool’ Category

Darwin’s Big Idea May Be The Biggest Yet

with 13 comments

Back in 1859, Charles Darwin released his famous theory of evolution by natural selection whereby inherent variations in the individual members of some population of organisms under consideration would eventually lead to speciation events due to those variations producing a differential in survival and reproductive success and thus leading to the natural selection of some subset of organisms within that population.  As Darwin explained in his On The Origin of Species:

If during the long course of ages and under varying conditions of life, organic beings vary at all in the several parts of their organisation, and I think this cannot be disputed; if there be, owing to the high geometrical powers of increase of each species, at some age, season, or year, a severe struggle for life, and this certainly cannot be disputed; then, considering the infinite complexity of the relations of all organic beings to each other and to their conditions of existence, causing an infinite diversity in structure, constitution, and habits, to be advantageous to them, I think it would be a most extraordinary fact if no variation ever had occurred useful to each being’s own welfare, in the same way as so many variations have occurred useful to man. But if variations useful to any organic being do occur, assuredly individuals thus characterised will have the best chance of being preserved in the struggle for life; and from the strong principle of inheritance they will tend to produce offspring similarly characterised. This principle of preservation, I have called, for the sake of brevity, Natural Selection.

While Darwin’s big idea completely transformed biology in terms of it providing (for the first time in history) an incredibly robust explanation for the origin of the diversity of life on this planet, his idea has since inspired other theories pertaining to perhaps the three largest mysteries that humans have ever explored: the origin of life itself (not just the diversity of life after it had begun, which was the intended scope of Darwin’s theory), the origin of the universe (most notably, why the universe is the way it is and not some other way), and also the origin of consciousness.

Origin of Life

In order to solve the first mystery (the origin of life itself), geologists, biologists, and biochemists are searching for plausible models of abiogenesis, whereby the general scheme of these models would involve chemical reactions (pertaining to geology) that would have begun to incorporate certain kinds of energetically favorable organic chemistries such that organic, self-replicating molecules eventually resulted.  Now, where Darwin’s idea of natural selection comes into play with life’s origin is in regard to the origin and evolution of these self-replicating molecules.  First of all, in order for any molecule at all to build up in concentration requires a set of conditions such that the reaction leading to the production of the molecule in question is more favorable than the reverse reaction where the product transforms back into the initial starting materials.  If merely one chemical reaction (out of a countless number of reactions occurring on the early earth) led to a self-replicating product, this would increasingly favor the production of that product, and thus self-replicating molecules themselves would be naturally selected for.  Once one of them was produced, there would have been a cascade effect of exponential growth, at least up to the limit set by the availability of the starting materials and energy sources present.

Now if we assume that at least some subset of these self-replicating molecules (if not all of them) had an imperfect fidelity in the copying process (which is highly likely) and/or underwent even a slight change after replication by reacting with other neighboring molecules (also likely), this would provide them with a means of mutation.  Mutations would inevitably lead to some molecules becoming more effective self-replicators than others, and then evolution through natural selection would take off, eventually leading to modern RNA/DNA.  So not only does Darwin’s big idea account for the evolution of diversity of life on this planet, but the basic underlying principle of natural selection would also account for the origin of self-replicating molecules in the first place, and subsequently the origin of RNA and DNA.

Origin of the Universe

Another grand idea that is gaining heavy traction in cosmology is that of inflationary cosmology, where this theory posits that the early universe underwent a period of rapid expansion, and due to quantum mechanical fluctuations in the microscopically sized inflationary region, seed universes would have resulted with each one having slightly different properties, one of which that would have expanded to be the universe that we live in.  Inflationary cosmology is currently heavily supported because it has led to a number of predictions, many of which that have already been confirmed by observation (it explains many large-scale features of our universe such as its homogeneity, isotropy, flatness, and other features).  What I find most interesting with inflationary theory is that it predicts the existence of a multiverse, whereby we are but one of an extremely large number of other universes (predicted to be on the order of 10^500, if not an infinite number), with each one having slightly different constants and so forth.

Once again, Darwin’s big idea, when applied to inflationary cosmology, would lead to the conclusion that our universe is the way it is because it was naturally selected to be that way.  The fact that its constants are within a very narrow range such that matter can even form, would make perfect sense, because even if an infinite number of universes exist with different constants, we would only expect to find ourselves in one that has the constants within the necessary range in order for matter, let alone life to exist.  So any universe that harbors matter, let alone life, would be naturally selected for against all the other universes that didn’t have the right properties to do so, including for example, universes that had too high or too low of a cosmological constant (such as those that would have instantly collapsed into a Big Crunch or expanded into a heat death far too quickly for any matter or life to have formed), or even universes that didn’t have the proper strong nuclear force to hold atomic nuclei together, or any other number of combinations that wouldn’t work.  So any universe that contains intelligent life capable of even asking the question of their origins, must necessarily have its properties within the required range (often referred to as the anthropic principle).

After our universe formed, the same principle would also apply to each galaxy and each solar system within those galaxies, whereby because variations exist in each galaxy and within each substituent solar system (differential properties analogous to different genes in a gene pool), then only those that have an acceptable range of conditions are capable of harboring life.  With over 10^22 stars in the observable universe (an unfathomably large number), and billions of years to evolve different conditions within each solar system surrounding those many stars, it isn’t surprising that eventually the temperature and other conditions would be acceptable for liquid water and organic chemistries to occur in many of those solar systems.  Even if there was only one life permitting planet per galaxy (on average), that would add up to over 100 billion life permitting planets in the observable universe alone (with many orders of magnitude more life permitting planets in the non-observable universe).  So given enough time, and given some mechanism of variation (in this case, differences in star composition and dynamics), natural selection in a sense can also account for the evolution of some solar systems that do in fact have life permitting conditions in a universe such as our own.

Origin of Consciousness

The last significant mystery I’d like to discuss involves the origin of consciousness.  While there are many current theories pertaining to different aspects of consciousness, and while there has been much research performed in the neurosciences, cognitive sciences, psychology, etc., pertaining to how the brain works and how it correlates to various aspects of the mind and consciousness, the brain sciences (though neuroscience in particular) are in their relative infancy and so there are still many questions that haven’t been answered yet.  One promising theory that has already been shown to account for many aspects of consciousness is Gerald Edelman’s theory of neuronal group selection (NGS) otherwise known as neural Darwinism (ND), which is a large scale theory of brain function.  As one might expect from the name, the mechanism of natural selection is integral to this theory.  In ND, the basic idea consists of three parts as read on the Wiki:

  1. Anatomical connectivity in the brain occurs via selective mechanochemical events that take place epigenetically during development.  This creates a diverse primary neurological repertoire by differential reproduction.
  2. Once structural diversity is established anatomically, a second selective process occurs during postnatal behavioral experience through epigenetic modifications in the strength of synaptic connections between neuronal groups.  This creates a diverse secondary repertoire by differential amplification.
  3. Re-entrant signaling between neuronal groups allows for spatiotemporal continuity in response to real-world interactions.  Edelman argues that thalamocortical and corticocortical re-entrant signaling are critical to generating and maintaining conscious states in mammals.

In a nutshell, the basic differentiated structure of the brain that forms in early development is accomplished through cellular proliferation, migration, distribution, and branching processes that involve selection processes operating on random differences in the adhesion molecules that these processes use to bind one neuronal cell to another.  These crude selection processes result in a rough initial configuration that is for the most part fixed.  However, because there are a diverse number of sets of different hierarchical arrangements of neurons in various neuronal groups, there are bound to be functionally equivalent groups of neurons that are not equivalent in structure, but are all capable of responding to the same types of sensory input.  Because some of these groups should in theory be better than others at responding to some particular type of sensory stimuli, this creates a form of neuronal/synaptic competition in the brain, whereby those groups of neurons that happen to have the best synaptic efficiency for the stimuli in question are naturally selected over the others.  This in turn leads to an increased probability that the same network will respond to similar or identical signals in the future.  Each time this occurs, synaptic strengths increase in the most efficient networks for each particular type of stimuli, and this would account for a relatively quick level of neural plasticity in the brain.

The last aspect of the theory involves what Edelman called re-entrant signaling whereby a sampling of the stimuli from functionally different groups of neurons occurring at the same time leads to a form of self-organizing intelligence.  This would provide a means for explaining how we experience spatiotemporal consistency in our experience of sensory stimuli.  Basically, we would have functionally different parts of the brain, such as various maps in the visual centers that pertain to color versus others that pertain to orientation or shape, that would effectively amalgamate the two (previously segregated) regions such that they can function in parallel and thus correlate with one another producing an amalgamation of the two types of neural maps.  Once this re-entrant signaling is accomplished between higher order or higher complexity maps in the brain, such as those pertaining to value-dependent memory storage centers, language centers, and perhaps back to various sensory cortical regions, this would create an even richer level of synchronization, possibly leading to consciousness (according to the theory).  In all of the aspects of the theory, the natural selection of differentiated neuronal structures, synaptic connections and strengths and eventually that of larger re-entrant connections would be responsible for creating the parallel and correlated processes in the brain believed to be required for consciousness.  There’s been an increasing amount of support for this theory, and more evidence continues to accumulate in support of it.  In any case, it is a brilliant idea and one with a lot of promise in potentially explaining one of the most fundamental aspects of our existence.

Darwin’s Big Idea May Be the Biggest Yet

In my opinion, Darwin’s theory of evolution through natural selection was perhaps the most profound theory ever discovered.  I’d even say that it beats Einstein’s theory of Relativity because of its massive explanatory scope and carryover to other disciplines, such as cosmology, neuroscience, and even the immune system (see Edelman’s Nobel work on the immune system, where he showed how the immune system works through natural selection as well, as opposed to some type of re-programming/learning).  Based on the basic idea of natural selection, we have been able to provide a number of robust explanations pertaining to many aspects of why the universe is likely to be the way it is, how life likely began, how it evolved afterward, and it may possibly be the answer to how life eventually evolved brains capable of being conscious.  It is truly one of the most fascinating principles I’ve ever learned about and I’m honestly awe struck by its beauty, simplicity, and explanatory power.

DNA & Information: A Response to an Old ID Myth

with 35 comments

A common myth that goes around in Intelligent Design (creationist) circles is the idea that DNA can only degrade over time, and thus any and all mutations are claimed to be harmful and only serve to reduce “information” stored in that DNA.  The claim is specifically meant to suggest that evolution from a common ancestor is impossible by naturalistic processes because DNA wouldn’t have been able to form in the first place and/or it wouldn’t be able to grow or change to allow for speciation.  Thus, the claim implies that either an intelligent designer had to intervene and guide evolution every step of the way (by creating DNA, fixing mutations as they occurred or preventing them from happening, and then ceasing this intervention as soon as scientists began studying genetics), or it implies that all organisms must have been created all at once by an intelligent designer with DNA that was “intelligently” designed to fail and degrade over time (thus questioning the intelligence of this designer).

These claims have been refuted a number of times over the years by the scientific community with a consensus that’s been drawn from years of research in evolutionary biology among other disciplines, and the claims seem to be mostly a result of fundamental misunderstandings of biology (or intentional misrepresentations of the facts) and also the result of an improper application of information theory to biological processes.  What’s unfortunate is that these claims are still circulating around, largely because the propagators aren’t interested in reason, evidence, or anything that may threaten their beliefs in the supernatural, and so they simply repeat this non-sense to others without fact checking them and without any consideration as to whether the claims even appear to be rational or logically sound at all.

After having recently engaged in a discussion with a Christian that made this very claim (among many other unsubstantiated, faith-based assertions), I figured it would be useful to demonstrate why this claim is so easily refutable based on some simple thought experiments as well as some explanations and evidence found in the actual biological sciences.  First, let’s consider a strand of DNA with the following 12 nucleotide sequence (split into triplets for convenience):

ACT-GAC-TGA-CAG

If a random mutation occurs in this strand during replication, say, at the end of the strand, thus turning Guanine (G) to Adenine (A), then we’d have:

ACT-GAC-TGA-CAA

If another random mutation occurs in this string during replication, say, at the end of the string once again, thus turning Adenine (A) back to Guanine (G), then we’d have the original nucleotide sequence once again.  This shows how two random mutations could lead to the same original strand of genetic information, thus showing how it can lose its original information and have it re-created once again.  It’s also relevant to note that because there are 64 possible codons produced from the four available nucleotides (4^3 = 64), and since only 20 amino acids are needed to make proteins, there are actually several codons that code for any individual amino acid.

In the case given above, the complementary RNA sequence produced for the two sequences (before and after mutation) would be:

UGA-CUG-ACU-GUC (before mutation)
UGA-CUG-ACU-GUU (after mutation)

It turns out that GUC and GUU (the last triplets in these sequences) are both codons that code for the same amino acid (Valine), thus showing how a silent mutation can occur as well, where a silent mutation is one in which there are no changes to the amino acids or subsequent proteins that the sequence codes for (and thus no functional change in the organism at all).  The fact that silent mutations even exist also shows how mutations don’t necessarily result in a loss or change of information at all.  So in this case, as a result of the two mutations, the end result was no change in the information at all.  Had the two strands been different such that they actually coded for different proteins after the initial mutation, then the second mutation would have reversed this problem anyway thus re-creating the original information that was lost.  So this demonstration in itself already refutes the claim that DNA can only lose information over time, or that mutations necessarily lead to a loss of information.  All one needs are random mutations, and there will always be a chance that some information is lost and then re-created.  Furthermore, if we had started with a strand that didn’t code for any amino acid at all in the last triplet, and then the random mutation changed it such that it did code for an amino acid (such as Valine), this would be an increase in information regardless (since a new amino acid was expressed that was previously absent), although this depends on how we define information (more on that in a minute).

Now we could ask, is the mutation valuable, that is, conducive to the survival of the organism?  That would entirely depend on the internal/external environment of that organism.  If we changed the diet of the organism or the other conditions in which it lived, we could arrive at opposite conclusions.  Which goes to show that of the mutations that aren’t neutral (most mutations are neutral), those that are harmful or beneficial are often so because of the specific internal/external environment under consideration. If an organism is able to digest lactose exclusively and it undergoes a mutation that provides some novel ability of digesting sucrose at the expense of digesting lactose a little less effectively than before, this would be a harmful mutation if the organism lived in an environment with lactose as the only available sugar.  If however, the organism was already in an environment that had more sucrose than lactose available, then the mutation would obviously be beneficial for now the organism could exploit the most available food source.  This would likely lead to that mutation being naturally selected for and increasing its frequency in the gene pool of that organism’s local population.

Another thing that is often glossed over with the Intelligent Design (ID) claims about genetic information being lost is the fact that they first have to define what exactly information is necessarily before presenting the rest of their argument.  Whether or not information is gained or lost requires knowing how to measure information in the first place.  This is where other problems begin to surface with ID claims like these because they tend to leave this definition either poorly defined, ambiguous or conveniently malleable to serve the interests of their argument.  What we need is a clear and consistent definition of information, and then we need to check that the particular definition given is actually applicable to biological systems, and then we can check to see if the claim is true.  I have yet to see this actually demonstrated successfully.  I was able to avoid this problem in my example above, because no matter how information is defined, it was shown that two mutations can lead to the original nucleotide sequence (whatever amount of genetic “information” that may have been).  If the information had been lost, it was recreated, and if it wasn’t technically lost at all during the mutation, then it shows that not all mutations lead to a loss of information.

I would argue that a fairly useful and consistent way to define information in terms of its application to describing the evolving genetics of biological organisms would be to describe it as any positive correlation between the functionality that the genetic sequences code for and the attributes of the environment that the organism is contained in.  This is useful because it represents the relationship between the genes and the environment and it seems to fit in line with the most well-established models in evolutionary biology, including the fundamental concept of natural selection leading to favored genotypes.

If an organism has a genetic sequence such that it can digest lactose (as per my previous example), and it is within an environment that has a supply of lactose available, then whatever genes are responsible for that functionality are effectively a form of information that describes or represents some real aspects of the organism’s environment (sources of energy, chemical composition, etc.).  The more genes that do this, that is, the more complex and specific the correlation, the more information there is in the organism’s genome.  So for example, if we consider the aforementioned mutation that caused the organism to develop a novel ability to digest sucrose in addition to lactose, then if it is in an environment that has both lactose and sucrose, this genome has even more environmental information stored within it because of the increased correlation between that genome and the environment.  If the organism can most efficiently digest a certain proportion of lactose versus sucrose, then if this optimized proportion evolves to approach the actual proportion of sugars in the environment around that organism (e.g. 30% lactose, 70% sucrose), then once again we have an increase in the amount of environmental information contained within its genome due to the increase in specificity.

Defining information in this way allows us to measure degrees of how well-adapted a particular organism is (even if only one trait or attribute at a time) to its current environment as well as its past environment (based on what the convergent evidence suggests) and it also provides at least one way to measure how genetically complex the organism is.

So not only are the ID claims about genetic information easily refuted with the inherent nature of random mutations and natural selection, but we can also see that the claims are further refuted once we define genetic information such that it encompasses the fundamental relationship between genes and the environment they evolve in.

Religious Paradigms in the Wake of Science

with 2 comments

Albert Einstein once said “Science without religion is lame, religion without science is blind.” From my perspective, I see the latter as most certainly true as science is the only way we’ve been able to gain a falsifiable world view of our universe. As for the former, it seems that Einstein was mainly pointing out how religion has largely precipitated from the human aspiration to ascertain truth, and without that drive for truth, science would be ineffective. That also sounds reasonable, as early on and throughout most of human history, religion was more or less the dominant world view used to provide many explanations for the unknown. Many if not most of these explanations were supernatural and the world view in general was also highly anthropomorphic and anthropocentric, perhaps due to its highly subjective basis and the failure to see that subjectivity bias as a fundamental problem (even if it sometimes produces more intuitive explanations). For a more in depth analysis of religion, I recommend you read one of my previous posts.

As people stumbled upon science, realizing that the same empirical and causally-based methodologies used to tackle everyday problems could actually be applied to the investigation of all phenomena, it has been slowly but surely replacing the religious world views with a more objective perspective as the human quests for truth, understanding, and predictive power are perpetuated. In the hopes of maintaining many of the old religious world views, there has no doubt been an enormous amount of religious opposition to science. It’s certainly not difficult to see why so many different religious proponents oppose science. After all, the pragmatic knowledge and explanatory power derived from science has replaced the hundreds of different gods and supernatural explanations proposed over the centuries, and it has also been taking power away from the priests and clergy whose authority throughout history has been based on the presumed existence of those gods and supernatural processes. Above and beyond the fact that science has been eliminating the “gods of the gaps” one by one, science has also been refuting some primary and often necessary assumptions within certain religions. Overall, it seems that the religious world views are slowly fading away in the wake of science. Let’s examine a few…

Human Origins

There is a strong belief held by many religious proponents that human beings along with all other species were created by a deity in their present form. Science has shown us no evidence of any deities, but it has shown us a plethora of evidence within evolutionary biology (among other disciplines) which shows that human beings, like all other life forms on Earth, have indeed evolved from a common ancestor thus forming the diversity of life we see today. Furthermore, we are seeing many different species continue to evolve (including human beings). Despite the scientific consensus that evolution is a fact, there are a large number of people that ignore the evidence in order to preserve their creation origin myths as well as to preserve many other parts of their old world view. While this ignorance may be seen as inconsequential to some (people are entitled to their own beliefs after all), it definitely becomes problematic when it enters and poisons the educational and political spheres of society where reason and intellect are needed most.

Some people have actually gone so far as to try and add Creationism as a complement to the Theory of Evolution currently being taught within the science curriculum of various public schools, despite the fact that the creationist’s claims aren’t supported by any scientific evidence, and thus should remain in the academic realms of cultural studies, religious studies, and mythology. To make matters worse, many religious proponents have also tried to use pseudo-scientific arguments to disprove evolution (although to no avail). Some have even resorted to using the intellectually dishonest (or merely ignorant) argument claiming that “evolution is just a theory”, not realizing that the meaning of the word “theory” within science is quite different from the common everyday usage. Whereas the common everyday usage of the word “theory” is meant to imply a “hypothesis”, the scientific usage implies an explanation with a factual basis that is generally supported by most if not all of the scientific community within the relevant fields. Einstein’s General Theory of Relativity is no different and thus would also be considered as “just a theory”, but we know for a fact that some force which we call “gravity” does indeed exist, and this force also produces measurable temporal dilation, as well as the non-Euclidean or curved space effects predicted by the theory. While some of the details of these theories may remain under contention, and while the theories may be incomplete in one way or another, the main crux of these scientific theories are widely accepted as scientific facts.

These kinds of arguments and tactics have far less precedent, for in the past, religious claims were largely supported by religious authority and intuition alone and didn’t require falsifiable scientific support. As science has continued to gain more influence and followers through its explanatory power, and as more educated people begin to participate in these kinds of public discourses, the necessity of scientifically grounded arguments has grown substantially. So it isn’t all that surprising to see many of the people with religious-based world views try and find scientific arguments to support their case, although it is obviously hypocritical and inconsistent when the same people undermine science when it no longer supports their position. The crucial difference worth noting here is that science is ultimately about trying to find an explanatory and descriptive model that fits the data best, whereas those trying to prove religious beliefs to be true are effectively cherry-picking data to fit a presupposed model. That is, science is always willing to scrap a poor model for a better one that has more explanatory and predictive power as more and more data is collected, whereas religion clings to one model and one model only no matter how poorly it fits the ever increasing amount of data and despite it’s usual lack of explanatory and predictive power.

Teleological Evolution of Humans

Evolutionary theists believe that evolution is factual, but some of them also believe that evolution has had a specific purpose or end-goal in mind determined by a deity, namely to produce human beings (another example of religious anthropocentrism).  In a few of these religious accounts, it has been suggested that once humans evolved from other life forms, they were given a soul and have been participating in some kind of an ongoing religious narrative.  Some have claimed that humans evolved to worship some god(s), to prepare for an apocalypse, to prepare for the afterlife, and other similar stories.  The main point here is that within these types of religious claims, the human species is purportedly the final speciation goal of evolution, and as a result, humans are thought to be the most remarkable, most intellectually capable, and most important species that will ever exist.

In terms of the scientific credibility of such claims, none of the claims are falsifiable except perhaps one — that humans are the end-all be-all for evolution and speciation, or to put it another way, that humans (or another species for that matter) will not evolve further (let alone evolve to produce a species that is more remarkable or one with more intelligent capabilities than homo sapiens).  We can already see that the assumption that humans will no longer evolve is patently false by noticing some relatively recent evolutionary changes to human beings, including the otherwise unnecessary ability for some human adults to digest lactose (this mutation became favorable after the recent development of agriculture and dairy farming several thousand years ago), the existence of specific disease resistances (and their genetic markers) within certain ethnic populations, and other gene pool changes due to genetic drift.

Perhaps more importantly, with the recent development of genetic engineering, we are beginning to consciously and directly guide our own evolution at the molecular level (and the evolution of other species).  As this technology develops further, we are likely to change extremely quickly into a completely different species, and one with more advanced capabilities engineered into the genome. Interestingly enough, there hasn’t been any evidence for the teleological evolution of any species until relatively recently, but it is human beings that are teleologically driving it through both artificial and, what I call, “engineered” selection.

Free Will

If science has shown us anything, it has shown us that there is a causal structure that exists in the world around us in which events that occur are ultimately caused by prior events. If this weren’t the case, then we could never successfully apply the scientific method, let alone live our daily lives with any predictable order or structure. Fortunately, because of the causal (and potentially deterministic) nature of our universe, we’ve been able to successfully formulate hypotheses, test them, and use the results to make further testable predictions.  Regarding free will, there is no known way for humans (or any other entity or object for that matter) to circumvent this causality without their actions being causa sui which would not only undermine the process of rational thought (which depends on causal thought processes), but would also go against every bit of scientific evidence we have obtained thus far.

Even if the randomness proposed within quantum mechanics were ontologically the case (which we’ll likely never know), we all know that randomness can’t produce freely willed actions either, since there have to be non-random conscious intentions and thought processes behind any deliberate action.  So whether the universe is ontologically deterministic or indeterministic (i.e. random), classical free will is logically incompatible with either possibility. Obviously this presents a serious problem to those religious views which assume that humans do in fact possess free will. Concepts such as moral responsibility, human fate in some proposed afterlife, karma, etc., lose their luster when free will is taken out of the equation since this would imply that any spiritual fate supposed isn’t something we can actually change or control anyway, and thus any implemented punishment or reward is ultimately futile.

Despite the fact that we don’t have free will, we all live with the illusion of free will since we don’t directly experience the prior causes to our thoughts and subsequent actions, and thus we truly feel that we self-cause those thoughts and actions.  In the grand scheme of things, even without any free will, we can see that our societal approach of implementing laws, crime deterrence measures, and any punishment-reward system for that matter, isn’t based on the assumption that we can freely choose our behaviors so much as they are based on their efficacy to maximize safety, productivity, as well as what society deems to be acceptable behavior.  It’s efficacy is accomplished primarily through the physical constraint measures put into place as well as the pragmatic application of psychological conditioning principles.

It doesn’t ultimately matter whether or not we could have chosen to behave differently unless one is trying to maintain certain metaphysical presuppositions, such as those proposed in many religions. However, our recognition that free will doesn’t exist can certainly affect how we approach problems in society. As a result of science demonstrating that we lack free will through the discovery of causal constraints such as genes, the body’s internal environment, and the body’s external physical environment (including that which causes the psychological conditioning of the brain), we’re definitely becoming more able to address the actual root causes of many problematic behaviors. In doing so, rather than wasting resources and erroneously blaming an individual for not “choosing” to behave differently (as in many religions), we can appropriately view every individual as an innocent amalgam of genetic and environmental information (regardless of their behavior) and then take more effective measures to improve their behavior by attempting to change any problematic genes and environmental factors.

Struggle for Morality

One of the most pressing issues regarding the human condition is the constant struggle to behave in ways that society deems to be moral. Many religions have their own ideas about what is considered to be moral behavior and they often claim that their particular morals are ordained by a god or some form of divine authority. It is also common that morality and immorality play an important role within various religious narratives.  For example, within the Abrahamic religions, if a person commits what the religion deems to be immoral acts, that is, if they “sin”, and this person does not repent or have their sins absolved, they are destined to eternal damnation.  Within Christianity, “sin” is considered an inevitable act passed down from generation to generation ever since the supposed “fall of man” which, as the story goes, began with a first descendent, named Adam.  This concept of seeing humans as inherent sinners is sometimes referred to as “original sin”.

As was mentioned in the previous section, humans’ lack of free will suggests that humans ultimately have no control over whether they “sin” or not.  Behavior is determined by prior causes such as a person’s genes and the psychological conditioning they’ve undergone throughout their lives.  Evolutionary biologists have also shown that the reasons for humans behaving in ways that society or various religions deem immoral is because of selfish genes as well as an ongoing conflict between biological instincts and societal conventions and expectations.

The strategy that genes tend to implement through their respective phenotypes (including behavior) tend to perpetuate those genes through means of self-preservation, reproductive success, and subsequent child-rearing success.  Additionally, because of the incredible speed of cultural evolution and ever-changing social conventions, humans may find difficulties adhering to particular conventions due to their biological evolution lagging behind that cultural evolution. To give some examples, if people kill others or steal, it is likely (or was likely long ago) to increase one’s chances of survival or increase one’s chances of successful mating by gaining power, property, and social status.  Infidelity could also be seen as a result of being sexually attracted to others because they may provide better genes for new offspring or simply provide more offspring.  Also, if humans are naturally more of a polygamous primate, it would make sense that monogamy, even if the current societal convention, would be difficult to maintain. Thus, there are many possible reasons for why humans behave the way they do, and science has been continuing to enlighten us with these reasons as we gain more information from evolutionary biology and psychology (among other disciplines).

As for the religious claim that humans will always be immoral, a few things must be made clear. For one, morality is largely determined by society, and so what is considered moral in one society may be considered immoral in another. Despite the claim by some religious proponents that religions provide some kind of objective foundation for ethics and morals, we can see that different religions often proclaim different morals, thus it is clear that no such objectivity exists. Science and reason on the other hand do provide a nice resource for answering moral questions by showing us in detail the consequences of our actions (such that we can better determine how we ought to behave), by providing us with a clearer picture of how the world really is so that our moral goals aren’t based on false pretenses, and by providing us with increasingly better ways to achieve those moral goals.

As we continue to evolve as humans or into another species entirely, our innate feelings or instincts about what is moral or immoral will likely continue to change (as will our behavior) since anything that is innate has a biological basis. Most importantly, as we continue to consciously guide our own species’ evolution through genetic engineering, we will have the power to shape human nature into anything we desire. In other words, we aren’t necessarily trapped in a struggle for morality as many religions claim, for we are going to have greater and greater abilities to change our instinctual behavior such that we are naturally inclined to behave in any way that society desires. The key point here is that, as opposed to some religious views which assume that mankind is forever doomed to immoral behavior, science is providing a way out of this supposed predicament.

Final Thoughts

It’s not at all surprising to see certain religious groups highly opposed to science, for there are countless ways that science has been threatening to their world view. Even the fear of death which has likely attracted people to religions for the promise of eternal life is being addressed by science as advances in genetic engineering, medicine, and artificial intelligence work toward increasing life expectancy potentially to the theoretical upper limit (i.e. for as long as the universe is able to support life, given the Second Law of Thermodynamics, etc.).

One striking parallel between many religious claims and the actual efficacy of science is that science truly appears to be providing the ultimate salvation of our species (and whatever species we will become). However, it is being accomplished by taking the ever increasing knowledge acquired over time and addressing every problem we face within the human condition, one by one. While religion has played an important role in history, most notably, in the human quest for truth — it seems clear to me that history has indeed also shown us that the more we accept and use science to learn about the universe, the better chance we have to achieve our goals as our species continually evolves.

An Evolved Consciousness Creating Conscious Evolution

with 3 comments

Two Evolutionary Leaps That Changed It All

As I’ve mentioned in a previous post, human biological evolution has led to the emergence of not only consciousness but also a co-existing yet semi-independent cultural evolution (through the unique evolution of the human brain).  This evolutionary leap has allowed us to produce increasingly powerful technologies which in turn have provided a means for circumventing many natural selection pressures that our physical bodies would otherwise be unable to handle.

One of these technologies has been the selective breeding of plants and animals, with this process often referred to as “artificial” selection, as opposed to “natural” selection since human beings have served as an artificial selection pressure (rather than the natural selection pressures of the environment in general).  In the case of our discovery of artificial selection, by choosing which plants and animals to cultivate and raise, we basically just catalyzed the selection process by providing a selection pressure based on the plant or animal traits that we’ve desired most.  By doing so, rather than the selection process taking thousands or even millions of years to produce what we have today (in terms of domesticated plants and animals), it only took a minute fraction of that time since it was mediated through a consciously guided or teleological process, unlike natural selection which operates on randomly differentiating traits leading to differential reproductive success (and thus new genomes and species) over time.

This second evolutionary leap (artificial selection that is) has ultimately paved the way for civilization, as it has increased the landscape of our diet and thus our available options for food, and the resultant agriculture has allowed us to increase our population density such that human collaboration, complex distribution of labor, and ultimately the means for creating new and increasingly complex technologies, have been made possible.  It is largely because of this new evolutionary leap that we’ve been able to reach the current pinnacle of human evolution, the newest and perhaps our last evolutionary leap, or what I’ve previously referred to as “engineered selection”.

With artificial selection, we’ve been able to create new species of plants and animals with very unique and unprecedented traits, however we’ve been limited by the rate of mutations or other genomic differentiating mechanisms that must arise in order to create any new and desirable traits. With engineered selection, we can simply select or engineer the genomic sequences required to produce the desired traits, effectively allowing us to circumvent any genomic differentiation rate limitations and also allowing us instant access to every genomic possibility.

Genetic Engineering Progress & Applications

After a few decades of genetic engineering research, we’ve gained a number of capabilities including but not limited to: producing recombinant DNA, producing transgenic organisms, utilizing in vivo trans-species protein production, and even creating the world’s first synthetic life form (by adding a completely synthetic or human-constructed bacterial genome to a cell containing no DNA).  The plethora of potential applications for genetic engineering (as well as those applications currently in use) has continued to grow as scientists and other creative thinkers are further discovering the power and scope of areas such as mimetics, micro-organism domestication, nano-biomaterials, and many other inter-related niches.

Domestication of Genetically Engineered Micro and Macro-organisms

People have been genetically modifying plants and animals for the same reasons they’ve been artificially selecting them — in order to produce species with more desirable traits. Plants and animals have been genetically engineered to withstand harsher climates, resist harmful herbicides or pesticides (or produce their own pesticides), produce more food or calories per acre (or more nutritious food when all else is equal), etc.  Plants and animals have also been genetically modified for the purposes of “pharming”, where substances that aren’t normally produced by the plant or animal (e.g. pharmacological substances, vaccines, etc.) are expressed, extracted, and then purified.

One of the most compelling applications of genetic engineering within agriculture involves solving the “omnivore’s dilemma”, that is, the prospect of growing unconscious livestock by genetically inhibiting the development of certain parts of the brain so that the animal doesn’t experience any pain or suffering.  There have also been advancements made with in vitro meat, that is, producing cultured meat cells so that no actual animal is needed at all other than some starting cells taken painlessly from live animals (which are then placed into a culture media to grow into larger quantities of meat), however it should be noted that this latter technique doesn’t actually require any genetic modification, although genetic modification may have merit in improving these techniques.  The most important point here is that these methods should decrease the financial and environmental costs of eating meat, and will likely help to solve the ethical issues regarding the inhumane treatment of animals within agriculture.

We’ve now entered a new niche regarding the domestication of species.  As of a few decades ago, we began domesticating micro-organisms. Micro-organisms have been modified and utilized to produce insulin for diabetics as well as other forms of medicine such as vaccines, human growth hormone, etc.  There have also been certain forms of bacteria genetically modified in order to turn cellulose and other plant material directly into hydrocarbon fuels.  This year (2014), E. coli bacteria have been genetically modified in order to turn glucose into pinene (a high energy hydrocarbon used as a rocket fuel).  In 2013, researchers at the University of California, Davis, genetically engineered cyanobacteria (a.k.a. blue-green algae) by adding particular DNA sequences to its genome which coded for specific enzymes such that it can use sunlight and the process of photosynthesis to turn CO2 into 2,3 butanediol (a chemical that can be used as a fuel, or to make paint, solvents, and plastics), thus producing another means of turning our over abundant carbon emissions back into fuel.

On a related note, there are also efforts underway to improve the efficiency of certain hydro-carbon eating bacteria such as A. borkumensis in order to clean up oil spills even more effectively.  Imagine one day having the ability to use genetically engineered bacteria to directly convert carbon emissions back into mass-produced fuel, and if the fuel spills during transport, also having the counterpart capability of cleaning it up most efficiently with another form of genetically engineered bacteria.  These capabilities are being further developed and are only the tip of the iceberg.

In theory, we should also be able to genetically engineer bacteria to decompose many other materials or waste products that ordinarily decompose extremely slowly. If any of these waste products are hazardous, bacteria could be genetically engineered to breakdown or transform the waste products into a safe and stable compound.  With these types of solutions we can make many new materials and have a method in line for their proper disposal (if needed).  Additionally, by utilizing some techniques mentioned in the next section, we can also start making more novel materials that decompose using non-genetically-engineered mechanisms.

It is likely that genetically modified bacteria will continue to provide us with many new types of mass-produced chemicals and products. For those processes that do not work effectively (if at all) in bacterial (i.e. prokaryotic) cells, then eukaryotic cells such as yeast, insect cells, and mammalian cells can often be used as a viable option. All of these genetically engineered domesticated micro-organisms will likely be an invaluable complement to the increasing number of genetically modified plants and animals that are already being produced.

Mimetics

In the case of mimetics, scientists are discovering new ways of creating novel materials using a bottom-up approach at the nano-scale by utilizing some of the self-assembly techniques that natural selection has near-perfected over millions of years.  For example, mollusks form sea shells with incredibly strong structural/mechanical properties by their DNA coding for the synthesis of specific proteins, and those proteins bonding the raw materials of calcium and carbonate into alternating layers until a fully formed shell is produced.  The pearls produced by clams are produced with similar techniques. We could potentially use the same DNA sequence in combination with a scaffold of our choosing such that a similar product is formed with unique geometries, or through genetic engineering techniques, we could modify the DNA sequence so that it performs the same self-assembly with completely different materials (e.g. silicon, platinum, titanium, polymers, etc.).

By combining the capabilities of scaffolding as well as the production of unique genomic sequences, one can further increase the number of possible nanomaterials or nanostructures, although I’m confident that most if not all scaffolding needs could eventually be accomplished by the DNA sequence alone (much like the production of bone, exoskeleton, and other types of structural tissues in animals).  The same principles can be applied by looking at how silk is produced by spiders, how the cochlear hair cells are produced in mammals, etc.  Many of these materials are stronger, lighter, and more defect-free than some of the best human products ever engineered.  By mimicking and modifying these DNA-induced self-assembly techniques, we can produce entirely new materials with unprecedented properties.

If we realize that even the largest plants and animals use these same nano-scale assembly processes to build themselves, it isn’t hard to imagine using these genetic engineering techniques to effectively grow complete macro-scale consumer products.  This may sound incredibly unrealistic with our current capabilities, but imagine one day being able to grow finished products such as clothing, hardware, tools, or even a house.  There are already people working on these capabilities to some degree (for example using 3D printed scaffolding or other scaffolding means and having plant or animal tissue grow around it to form an environmentally integrated bio-structure).  If this is indeed realizable, then perhaps we could find a genetic sequence to produce almost anything we want, even a functional computer or other device.  If nature can use DNA and natural selection to produce macro-scale organisms with brains capable of pattern recognition, consciousness, and computation (and eventually the learned capability of genetic engineering in the case of the human brain), then it seems entirely reasonable that we could eventually engineer DNA sequences to produce things with at least that much complexity, if not far higher complexity, and using a much larger selection of materials.

Other advantages from using such an approach include the enormous energy savings gained by adopting the naturally selected economically efficient process of self-assembly (including less changes in the forms of energy used, and thus less loss) and a reduction in specific product manufacturing infrastructure. That is, whereas we’ve typically made industrial scale machines individually tailored to produce specific components which are later assembled into a final product, by using DNA (and the proteins it codes for) to do the work for us, we will no longer require nearly as much manufacturing capital, for the genetic engineering capital needed to produce any genetic sequence is far more versatile.

Transcending the Human Species

Perhaps the most important application of genetic engineering will be the modification of our own species.  Many of the world’s problems are caused by sudden environmental changes (many of them anthropogenic), and if we can change ourselves and/or other species biologically in order to adapt to these unexpected and sudden environmental changes (or to help prevent them altogether), then the severity of those problems can be reduced or eliminated.  In a sense, we would be selecting our own as well as other species by providing the proper genes to begin with, rather than relying on extremely slow genomic differentiation mechanisms and the greater rates of suffering and loss of life that natural selection normally follows.

Genetic Enhancement of Existing Features

With power over the genome, we may one day be able to genetically increase our life expectancy, for example, by modifying the DNA polymerase-g enzyme in our mitochondria such that they make less errors (i.e. mutations) during DNA replication, by genetically altering telomeres in our nuclear DNA such that they can maintain their length and handle more mitotic divisions, or by finding ways to preserve nuclear DNA, etc. If we also determine which genes lead to certain diseases (as well as any genes that help to prevent them), genetic engineering may be the key to extending the length of our lives perhaps indefinitely.  It may also be the key to improving the quality of that extended life by replacing the techniques we currently use for health and wellness management (including pharmaceuticals) with perhaps the most efficacious form of preventative medicine imaginable.

If we can optimize our brain’s ability to perform neuronal regeneration, reconnection, rewiring, and/or re-weighting based on the genetic instructions that at least partially mediate these processes, this optimization should drastically improve our ability to learn by improving the synaptic encoding and consolidation processes involved in memory and by improving the combinatorial operations leading to higher conceptual complexity.  Thinking along these lines, by increasing the number of pattern recognition modules that develop in the neo-cortex, or by optimizing their configuration (perhaps by increasing the number of hierarchies), our general intelligence would increase as well and would be an excellent complement to an optimized memory.  It seems reasonable to assume that these types of cognitive changes will likely have dramatic effects on how we think and thus will likely affect our philosophical beliefs as well.  Religious beliefs are also likely to change as the psychological comforts provided by certain beliefs may no longer be as effective (if those comforts continue to exist at all), especially as our species continues to phase out non-naturalistic explanations and beliefs as a result of seeing the world from a more objective perspective.

If we are able to manipulate our genetic code in order to improve the mechanisms that underlie learning, then we should also be able to alter our innate abilities through genetic engineering. For example, what if infants could walk immediately after birth (much like a newborn calf)? What if infants had adequate motor skills to produce (at least some) spoken language much more quickly? Infants normally have language acquisition mechanisms which allow them to eventually learn language comprehension and productivity but this typically takes a lot of practice and requires their motor skills to catch up before they can utter a single word that they do in fact understand. Circumventing the learning requirement and the motor skill developmental lag (at least to some degree) would be a phenomenal evolutionary advancement, and this type of innate enhancement could apply to a large number of different physical skills and abilities.

Since DNA ultimately controls the types of sensory receptors we have, we should eventually be able to optimize these as well.  For example, photoreceptors could be modified such that we would be able to see new frequencies of electro-magnetic radiation (perhaps a more optimized range of frequencies if not a larger range altogether).  Mechano-receptors of all types could be modified, for example, to hear a different if not larger range of sound frequencies or to increase tactile sensitivity (i.e. touch).  Olfactory or gustatory receptors could also be modified in order to allow us to smell and taste previously undetectable chemicals.  Basically, all of our sensations could be genetically modified and, when combined with the aforementioned genetic modifications to the brain itself, this would allow us to have greater and more optimized dimensions of perception in our subjective experiences.

Genetic Enhancement of Novel Features

So far I’ve been discussing how we may be able to use genetic engineering to enhance features we already possess, but there’s no reason we can’t consider using the same techniques to add entirely new features to the human repertoire. For example, we could combine certain genes from other animals such that we can re-grow damaged limbs or organs, have gills to breathe underwater, have wings in order to fly, etc.  For that matter, we may even be able to combine certain genes from plants such that we can produce (at least some of) our own chemical energy from the sun, that is, create at least partially photosynthetic human beings.  It is certainly science fiction at the moment, but I wouldn’t discount the possibility of accomplishing this one day after considering all of the other hybrid and transgenic species we’ve created already, and after considering the possible precedent mentioned in the endosymbiotic theory (where an ancient organism may have “absorbed” another to produce energy for it, e.g. mitochondria and chloroplasts in eukaryotic cells).

Above and beyond these possibilities, we could also potentially create advanced cybernetic organisms.  What if we were able to integrate silicon-based electronic devices (or something more biologically compatible if needed) into our bodies such that the body grows or repairs some of these technologies using biological processes?  Perhaps if the body is given the proper diet (i.e. whatever materials are needed in the new technological “organ”) and has the proper genetic code such that the body can properly assimilate those materials to create entirely new “organs” with advanced technological features (e.g. wireless communication or wireless access to an internet database activated by particular thoughts or another physiological command cue), we may eventually be able to get rid of external interface hardware and peripherals altogether.  It is likely that electronic devices will first become integrated into our bodies through surgical implantation in order to work with our body’s current hardware (including the brain), but having the body actually grow and/or repair these devices using DNA instruction would be the next logical step of innovation if it is eventually feasible.

Malleable Human Nature

When people discuss complex issues such as social engineering, sustainability, crime-reduction, etc., it is often mentioned that there is a fundamental barrier between our current societal state and where we want or need to be, and this barrier is none other than human nature itself.  Many people in power have tried to change human behavior with brute force while operating under the false assumption that human beings are analogous to some kind of blank slate that can simply learn or be conditioned to behave in any way without limits. This denial of human nature (whether implicit or explicit) has led to a lot of needless suffering and has also led to the de-synchronization of biological and cultural evolution.

Humans often think that they can adapt to any cultural change, but we often lose sight of the detrimental power that technology and other cultural inventions and changes can have over our physiological and psychological well-being. In a nutshell, the speed of cultural evolution can often make us feel like a fish out of water, perhaps better suited to live in an environment closer to our early human ancestors.  Whatever the case, we must embrace human nature and realize that our efforts to improve society (or ourselves) will only have long term efficacy if we work with human nature rather than against it.  So what can we do if our biological evolution is out-of-sync with our cultural evolution?  And what can we do if we have no choice but to accept human nature, that is, our (often selfish) biologically-driven motivations, tendencies, etc.?  Once again, genetic engineering may provide a solution to many of these previously insoluble problems.  To put it simply, if we can change our genome as desired, then we may be able to not only synchronize our biological and cultural evolution, but also change human nature itself in the process.  This change could not only make us feel better adjusted to the modern cultural environment we’re living in, but it could also incline us to instinctually behave in ways that are more beneficial to each other and to the world as a whole.

It’s often said that we have selfish genes in some sense, that is, many if not all of our selfish behaviors (as well as instinctual behaviors in general) are a reflection of the strategy that genes implement in their vehicles (i.e. our bodies) in order for the genes to maintain themselves and reproduce.  That genes possess this kind of strategy does not require us to assume that they are conscious in any way or have actual goals per se, but rather that natural selection simply selects genes that code for mechanisms which best maintain and spread those very genes.  Natural selection tends toward effective self-replicators, and that’s why “selfish” genes (in large part) cause many of our behaviors.  Improving reproductive fitness and successful reproduction has been the primary result of this strategy and many of the behaviors and motivations that were most advantageous to accomplish this are no longer compatible with modern culture including the long-term goals and greater good that humans often strive for.

Humans no longer exclusively live under the law of the jungle or “survival of the fittest” because our humanistic drives and their cultural reinforcements have expanded our horizons beyond simple self-preservation or a Machiavellian mentality.  Many humans have tried to propagate principles such as honesty, democracy, egalitarianism, immaterialism, sustainability, and altruism around the world, and they are often high-jacked by our often short-sighted sexual and survival-based instinctual motivations to gain sexual mates, power, property, a higher social status, etc.  Changing particular genes should also allow us to change these (now) disadvantageous aspects of human nature and as a result this would completely change how we look at every problem we face. No longer would we have to say “that solution won’t work because it goes against human nature”, or “the unfortunate events in human history tend to recur in one way or another because humans will always…”, but rather we could ask ourselves how we want or need to be and actually make it so by changing our human nature. Indeed, if genetic engineering is used to accomplish this, history would no longer have to repeat itself in the ways that we abhor. It goes without saying that a lot of our behavior can be changed for the better by an appropriate form of environmental conditioning, but for those behaviors that can’t be changed through conditioning, genetic engineering may be the key to success.

To Be or Not To Be?

It seems that we have been given a unique opportunity to use our ever increasing plethora of experiential data and knowledge and combine it with genetic engineering techniques to engineer a social organism that is by far the best adapted to its environment.  Additionally, we may one day find ourselves living in a true global utopia, if the barriers of human nature and the de-synchronization of biological and cultural evolution are overcome, and genetic engineering may be the only way of achieving such a goal.  One extremely important issue that I haven’t mentioned until now is the ethical concerns regarding the continued use and development of genetic engineering technology.  There are obviously concerns over whether or not we should even be experimenting with this technology.  There are many reasonable arguments both for and against using this technology, but I think that as a species, we have been driven to manipulate our environment in any way that we are capable of and this curiosity is a part of human nature itself.  Without genetic engineering, we can’t change any of the negative aspects of human nature but can only let natural selection run its course to modify our species slowly over time (for better or for worse).

If we do accept this technology, there are other concerns such as the fact that there are corporations and interested parties that want to use genetic engineering primarily if not exclusively for profit gain (often at the expense of actual universal benefits for our species) and which implement questionable practices like patenting plant and animal food sources in a potentially monopolized future agricultural market.  Perhaps an even graver concern is the potential to patent genes that become a part of the human genome, and the (at least short term) inequality that would ensue from the wealthier members of society being the primary recipients of genetic human enhancement. Some people may also use genetic engineering to create new bio-warfare weaponry and find other violent or malicious applications.  Some of these practices could threaten certain democratic or other moral principles and we need to be extremely cautious with how we as a society choose to implement and regulate this technology.  There are also numerous issues regarding how these technologies will affect the environment and various ecosystems, whether caused by people with admirable intentions or not.  So it is definitely prudent that we proceed with caution and get the public heavily involved with this cultural change so that our society can move forward as responsibly as possible.

As for the feasibility of the theoretical applications mentioned earlier, it will likely be computer simulation and computing power that catalyze the knowledge base and capability needed to realize many of these goals (by decoding the incredibly complex interactions between genes and the environment) and thus will likely be the primary limiting factor. If genetic engineering also involves expanding the DNA components we have to work with, for example, by expanding our base-four system (i.e. four nucleotides to choose from) to a higher based system through the use of other naturally occurring nucleotides or even the use of UBPs (i.e. “Unnatural Base Pairs”), while still maintaining low rates of base-pair mismatching and while maintaining adequate genetic information processing rates, we may be able to utilize previously inaccessible capabilities by increasing the genetic information density of DNA.  If we can overcome some of the chemical natural selection barriers that were present during abiogenesis and the evolution of DNA (and RNA), and/or if we can change the very structure of DNA itself (as well as the proteins and enzymes that are required for its implementation), we may be able to produce an entirely new type of genetic information storage and processing system, potentially circumventing many of the limitations of DNA in general, and thus creating a vast array of new species (genetically coded by a different nucleic acid or other substance).  This type of “nucleic acid engineering”, if viable, may complement the genetic engineering we’re currently performing on DNA and help us to further accomplish some of the aforementioned goals and applications.

Lastly, while some of the theoretical applications of genetic engineering that I’ve presented in this post may not sound plausible at all to some, I think it’s extremely important and entirely reasonable (based on historical precedent) to avoid underestimating the capabilities of our species.  We may one day be able to transform ourselves into whatever species we desire, effectively taking us from trans-humanism to some perpetual form of conscious evolution and speciation.  What I find most beautiful here is that the evolution of consciousness has actually led to a form of conscious evolution. Hopefully our species will guide this evolution in ways that are most advantageous to our species, and to the entire diversity of life on this planet.

The Co-Evolution of Language and Complex Thought

with 17 comments

Language appears to be the most profound feature that has arisen during the evolution of the human mind.  This feature of humanity has led to incredible thought complexity, and also provided the foundation for the most simplistic thoughts imaginable.  Many of us may wonder how exactly language is related to thought and also how the evolution of language has affected the evolution of thought complexity.  In this post, I plan to discuss what I believe to be some evolutionary aspects of psycholinguistics.

Mental Languages

It is clear that humans think in some form of language, whether it is accomplished as an interior monologue using our native spoken language and/or some form of what many call “mentalese” (i.e. a means of thinking about concepts and propositions without the use of words).  Our thoughts are likely accomplished by a combination of these two “types” of language.  The fact that young infants and aphasics (for example) are able to think, clearly implies that not all thoughts are accomplished through a spoken language.  It is also likely that the aforementioned “mentalese” is some innate form of mental symbolic representation that is primary in some sense, supported by the fact that it appears to be necessary in order for spoken language to develop or exist at all.  Considering that words and sentences do not have any intrinsic semantic content or value (at least non-iconic forms) illustrates that this “mentalese” is in fact a prerequisite for understanding or assigning the meaning of words and sentences.  Complex words can always be defined by a number of less complex words, but at some point a limit is reached whereby the most simple units of definition are composed of seemingly irreducible concepts and propositions.  Furthermore, those irreducible concepts and propositions do not require any words to have meaning (for if they did, we would have an infinite regress of words being defined by words being defined by words, ad infinitum).  The only time we theoretically require symbolic representation of semantic content using words is if the concepts are to be easily (if at all) communicated to others.

While some form of mentalese is likely the foundation or even ultimate form of thought, it is my contention that communicable language has likely had a considerable impact on the evolution of the human mind — not only in the most trivial or obvious way whereby communicated words affect our thoughts (e.g. through inspiration, imagination, and/or reflection of new knowledge or perspectives), but also by serving as a secondary multidimensional medium for symbolic representation. That is, spoken language (as well as its subsequent allotrope, written language) has provided a form of combinatorial leverage somewhat independent of (although working in harmony with) the mental or cognitive faculties that innately exist for thought.

To be sure, spoken language has likely co-evolved with our mentalese, as they seem to affect one another in various ways.  As new types or combinations of propositions and concepts are discovered, the spoken language has to adapt in order to make those new propositions and concepts communicable to others.  What interests me more however, is how communicable language (spoken or written) has affected the evolution of thought complexity itself.

Communicable Language and Thought Complexity

Words and sentences, which primarily developed in order to communicate instances of our mental language to others, have also undoubtedly provided a secondary multidimensional medium for symbolic representation.  For example, when we use words, we are able to compress a large amount of information (i.e. many concepts and propositions) into small tokens with varying densities.  This type of compression has provided a way to maximize our use of short-term and long-term memory in order for more complex thoughts and mental capabilities to develop (whether that increase in complexity is defined as longer strings of concepts or propositions, or otherwise).

When we think of a sentence to ourselves, we end up utilizing a phonological/auditory loop, whereby we can better handle and organize information at any single moment by internally “hearing” it.  We can also visualize the words in multiple ways including how the mouth movements of people speaking those words would look like (and we can use our tactile and/or motor memory to mentally simulate how our mouth feels when these words are spoken), and if a written form of the communicable language exists, we can actually visualize the words as they would appear in their written form (as well as the aforementioned tactile/motor memory to mentally simulate how it feels to write those words).  On top of this, we can often visualize each glyph in multiple formats (i.e. different sizes, shapes, fonts, etc.).  This has provided a multidimensional memory tool, because it serves to represent the semantic information in a way that our brain can perceive and associate with multiple senses (in this case through our auditory, visual, and somatosensory cortices).  In some cases, when a particular written language uses iconic glyphs (as opposed to arbitary symbols), the user can also visualize the concept represented by the symbol in an idealized fashion.  Associating information with multiple cognitive faculties or perceptual systems means that more neural network patterns of the brain will be involved with the attainment, retention, and recall of that information.  For those of us that have successfully used various pneumonic devices and other memory-enhancing “tricks”, we can clearly see the efficacy and importance of communicable language and its relationship to how we think about and combine various concepts and propositions.

By enhancing our memory, communicable language has served as an epistemic catalyst allowing us to build upon our previous knowledge in ways that would have likely been impossible without said language.  Once written language was developed, we were no longer limited by our own short-term and long-term memory, for we had a way of recording as much information as possible, and this also allowed us to better formulate new ideas and consider thoughts that would have otherwise been too complex to mentally visualize or keep track of.  Mathematics, for example, exponentially increased in complexity once we were able to represent the relationships between variables in a written form.  While previously we would have been limited by our short-term and long-term memory, written language allowed us to eventually formulate incredibly long (sometimes painfully long) mathematical expressions.  Once written language was converted further into an electro-mechanical language (i.e. through the use of computers), our “writing” mediums, information acquisition mechanisms, and pattern recognition capabilities, were further aided and enhanced exponentially thus providing yet another platform for an increased epistemic or cognitive “breathing space”.  If our brains underwent particular mutations after communicable language evolved, it may have provided a way to ratchet our way into entirely new cognitive niches or capabilities.  That is, by communicable language providing us with new strings of concepts and propositions, there may have been an unprecedented natural selection pressure/opportunity (if an advantageous brain mutation accompanied this new cognitive input) in order for our brain to obtain an entirely new and possibly more complex fundamental concept or way of thinking.

Summary

It seems evident to me that communicable language, once it had developed, served as an extremely important epistemic catalyst and multidimensional cognitive tool that likely had a great influence on the evolution of the human brain.  While some form of mentalese was likely a prerequisite and precursor to any subsequent forms of communicable language, the cognitive “breathing space” that communicable language provided, seems to have had a marked impact on the evolution of human thought complexity, and on the amount of knowledge that we’ve been able to obtain from the world around us.  I have no doubt that the current external linguistic tools we use (i.e. written and electronic forms of handling information) will continue to significantly alter the ongoing evolution of the human mind.  Our biological forms of memory will likely adapt in order to be economically optimized and better work with those external media.  Likewise, our increasing access to new types of information may have provided (and may continue to provide) a natural selective pressure or opportunity for our brains to evolve in order to think about entirely new and potentially more complex concepts, thereby periodically increasing the lexicon or conceptual database of our “mentalese” (assuming that those new concepts provide a survival/reproductive advantage).

Religion: Psychology, Evolution, and Socio-political Aspects

with one comment

Religion is such a strong driving force in most (if not all) cultures as it significantly affects how people behave and how they look at the world around them.  It’s interesting to see that so many religions share certain common elements, and it seems likely that these common elements arose from several factors including some psychological similarities between human beings.  Much like Carl Jung’s idea of a “collective unconscious”, humans likely share certain psychological tendencies and this would help to explain the religious commonalities that have precipitated over time.  It seems plausible that some evolutionary mechanisms, including natural selection and also the “evolution” of certain social/political structures, also played a role in establishing some of these religious commonalities.  I’d like to discuss some of my thoughts on certain religious beliefs including what I believe to be some important psychological, social, political, and evolutionary factors that have likely influenced the formation, acceptance, and ultimate success of religion as well as some common religious beliefs.

Fear of Death

The fear of death is probably one of the largest forces driving many religious beliefs.  This fear of death seems to exist for several reasons.  For one, the fear of death may be (at least partly) an evolutionary by-product of our biological imperative to survive.  We already perform involuntary physical actions instinctually in order to survive (e.g. fight-or-flight response, etc.).  Having an emotional element (such as fear) combined with our human intellect and self-awareness, can drive us to survive in less autonomous ways thus providing an even greater evolutionary advantage for natural selection.  For example, many people have been driven to circumvent death through scientific advancements.  Another factor to consider is that the fear of death may largely be a fear of the unknown or unfamiliar (related to the fear of change).  It shouldn’t be surprising then that a religion offering ways to appease this fear would become successful.

Could it be that our biological imperative to survive, coupled with the logical realization that we are mortal, have catalyzed a religious means for some form of cognitive dissonance reduction?  Humans that are in denial about (or are at least uncomfortable with) their inevitable death will likely be drawn towards religious beliefs that circumvent this inevitability with some form of spiritual eternal life or immortality.  Not only can this provide a means of circumventing mortality (perhaps by transcending the biological imperative with a spiritual version), but it can also reduce or eliminate the unknown aspects that contribute to the fear of death depending on the after-death specifics outlined by the religion.

A strange irony exists regarding what I call “spiritual imperatives” and I think it is worth mentioning.  If a religion professes that one’s ultimate goal should be preparation for the after-life (or some apocalyptic scenario), then adherents to such a doctrine may end up sacrificing their biological imperative (or make it a lower priority) in favor of some spiritual imperative.  That is, they may start to care less about their physical survival or quality of life in the interest of attaining what they believe to be spiritual survival.  In doing so, they may be sacrificing or de-prioritizing the very biological imperative that likely catalyzed the formation of their spiritual imperative in the first place.  So as strange as it may be, the fear of death may lead to some religious doctrines that actually hasten one’s inevitable death.

Morality, Justice, and Manipulation

Morality seems to be deeply ingrained in our very nature, and as a result we can see a universal implementation of moral structures in human societies.  It seems likely that this deeply ingrained sense of morality, much like many other innate traits shared by the human race, is a result of natural selection in the ongoing evolution of our species.  Our sense of morality has driven many beneficial behaviors (though not always) that tend to increase the survival of the individual.  For example, the golden rule (a principle that may even serve as a sort of universal moral creed) serves to benefit every individual by encouraging cooperation and altruism at the expense of selfish motives.  Just as some individual cells eventually evolved to become cooperative multi-cellular organisms (in order to gain mutual benefits in a “non-zero sum” game), so have other species (including human beings) evolved to cooperate with one another to increase mutual benefits including that of survival (John Maynard Smith and other biologists have shared this view of how evolution can lead to greater degrees of cooperation).  A sense of morality helps to reinforce this cooperation.  Evolution aside, establishing some kind of moral framework will naturally help to maximize what is deemed to be desirable behavior.  Religion has been an extremely effective means of accomplishing this goal.  First of all, religions tend to define morality in very specific ways.  Religion has also utilized fairly effective incentives and motivations for the masses to behave in ways desired by the society (or by its leaders).

Many religions profess a form of moral absolutism, where moral values are seen as objective, unquestionable, and often ordained by the authority of a god.  This makes a religion very attractive and effective by simplifying the moral structure of the society and backing it up with the authority of a deity.  If the rules are believed to be given by the authority of a deity, then there will be few (if any) people willing to question them and as a result there will be a much greater level of obedience.  The alternative, moral relativism, is more difficult to apply to a society’s dynamic as the behavioral goals in a morally relativistic society may not be very stable nor well-defined, even if moral relativism carries with it the benefits of religious or philosophical tolerance as well as open-mindedness.  Thus, moral absolutism is more likely to lead to productive societies, which may help to explain why moral absolutism has been such a successful religious meme (as well as the fact that morality in general seems to be a universal part of human nature).

Though I’m a moral realist in a strict sense since I believe that there are objective moral facts that exist, I’d also like to stipulate that I’m also a moral relativist, in the sense that I believe that any objective moral facts that exist are dependent on a person’s biology, psychology, and how those effect one’s ultimate goals for a satisfying and fulfilling life.  Since these factors may have some variance across a species and for sure a variance across different species, then morals are ultimately relative to those variances (if any exist).

In any case, I can appreciate why most people are drawn away from relativism (in any form).  It is difficult for most people to think about reality as consisting of elements that aren’t simply black-and-white.  After all, we are used to categorizing the world around us — fracturing it into finite, manageable, and well-defined parts that we can deal with and understand.  We often forget that we are subjectively experiencing the world around us, and that our individual frames of reference and perspectives can be quite different from person to person.  Relativism just isn’t very compatible with the common human illusion of seeing the world objectively, whether it is how we look at the physical world, language, our moral values, etc.

As for moral incentives, religions often imply that there will be some type of reward for the adherent and/or some type of punishment for the deviants.  Naturally anybody introduced to the religion (i.e. potential converts) will weigh the potential risks and benefits, with some people implementing Pascal’s wager and the like, likely leading to a larger number of followers over time.  You will also have established religious members that adhere to the specific rules within the religion based on the same moral incentives.  That is, the moral incentives put into place (i.e. punishment-reward system) can serve the purposes of obtaining religious members in the first place, and also to ensure that the religious members maintain a high level of obedience within the religion.  Of these converts and well-established followers, there will likely be a mixture of those that are primarily motivated by the fear of punishment and those primarily motivated by the desire for a reward.  Psychoanalysis aside, it wouldn’t be surprising if by briefly examining one’s behavior and personality, that one could ascertain an individual’s primary religious motivations (for their conversion and/or subsequent religious obedience).  It is likely however that most people would fail to see these motivations at work as they would prefer to think of their religious affiliations as a result of some revelation of truth.

The divine authorization and punishment-reward system within many religions can also provide a benefit to those that desire power and the manipulation of the populace.  If those in power desire an effective way to control the populace, they can create a religious structure with rules, morals, goals (including wars and conquests), etc., that benefit their agenda and then convince others that they are divinely authorized.  As long as the populace is convinced that the rules, morals, and goals are of a divine source, they will be more likely to comply with them.  Clearly this effect will be further amplified if a divine punishment-reward system is believed to exist.

One last point I’d like to make regarding morality involves the desire for divine justice.  People no doubt take comfort in the thought of everything being fair and orderly (from their perspective) in the long run, regardless of whether or not any unfairness presents itself during their lifetime.  It is much less comforting to accept that some people will do whatever they want and may die without ever receiving what one believes to be a just consequence, and/or that one has sacrificed many enjoyable human experiences in the interest of maintaining their religious requirements with potentially no long-term (i.e. after-death) return for their efforts.  The idea of an absolute justice being implemented after death definitely helps reinforce religious obedience in a world that has imperfect and subjective views (as well as implementations) of justice.

Desire for Free Will

Another common religious meme (related to the aforementioned moral frameworks) is the belief in classical free will.  If people practicing a particular religion are taught that they will be rewarded or punished for their actions, then it is logical for them to assume that they have free will over their actions — otherwise their moral responsibility would be non-existent and any divinely bestowed consequences incurred would be unjustified, meaningless, and futile.  So, in these types of religions, it is assumed that people should be able to make free choices that are not influenced or constrained by factors such as: genetics, any behavioral conditioning environment, any deterministic causal chain, or any random course of events for that matter.  That is, everyone’s behavior should be causa sui.  This way, it is the individual that is directly responsible for their behavior and ultimate fate rather than any factors outside of the individual’s control.

While the sciences have shown a plethora of evidence negating the existence of classical free will, many people continue to believe that free will exists.  It seems that people are naturally driven to believe that they have free will for a few reasons.  For one, the belief in free will is consistent with the illusion of free will that we consciously experience.  We do not feel that there is something or someone else in control of our fate (due to the principles of priority, consistency, and exclusivity as explained in Wagner’s Theory of Apparent Mental Causation), and so we have no immediate reason to believe that free will doesn’t exist.  It certainly feels like we have free will, even though the mechanistic physical laws of nature (whether deterministic or indeterministic) imply that we do not.  Second, from a deeper psychological perspective, if one believes in moral responsibility, has feelings of pride or shame for their actions, etc., the belief in free will is naturally reinforced.  People want to believe that they are in control because it better justifies the aforementioned punishment-reward system of both society and many religions.

Now granted, if all people agreed that free will was non-existent (most people assume we have free will), society’s system of legislation or law enforcement wouldn’t likely change much if at all.  Criminals being punished or detained for the protection of the majority of society would likely be a continued practice because pragmatically speaking, law enforcement has proven itself to be effective for providing safety, providing crime deterrence and so forth.  However, if people universally accepted that free will was non-existent, it would likely change how they view the punishment-reward system of society and religion.  People would probably focus more on the underlying genetic causes and conditioning environment that led to undesirable behavior rather than falsely looking at the individual as inherently bad or as someone who made poor choices that could have been made differently.

If someone feels that they have a lot to gain from a particular religion (or has invested so much of themselves into the religion already), and free will is a philosophical requirement for that particular religion, then they will likely find a way to rationalize the existence of free will (or rationalize any other religious assumption), despite the strong evidence against it (or lack of evidence in support of it).  There are even a few religions that simultaneously profess the existence of free will as well as the existence of an omniscient god that has complete knowledge of the future — despite the logical incompatibility of these two propositions.  Clearly, the desire for free will (whether conscious and/or unconscious) is stronger than most people realize.

Also, it seems that there is a general human desire for one’s life to have meaning and purpose, and perhaps some people feel that having free will over their actions is the only way to give their life meaning and purpose, as opposed to their life’s course being pre-determined or random.

Anthropocentrism & Purpose

Since religions are a product of human beings, it is not surprising to see that many of them have some anthropocentric purpose or element.  There seems to be a tendency for humans to assume that they are more important than anything else on this planet (or anything else in the universe for that matter).  This assumption may be fueled by the fact that human intelligence has brought us to the top of the food chain and has allowed us to manipulate our environment in ways that seem relatively extraordinary.  Humans certainly recognize this status and some may see it as necessarily divinely ordained or at least special in some way.  This helps to answer the age-old philosophical question: What is the meaning of life and/or why are we here?

By raising the value of human life over all other animals, religion can serve to separate humans from the rest of the animal kingdom, and thus separate humans from any animalistic traits that we dislike about ourselves.  Anthropocentric views have also been used to endorse otherwise questionable behavior that humans may choose to employ on the rest of the nature around them.  On the flip side, anthropocentrism can in fact lead to a humanistic drive or feeling of human responsibility to make the world a better place for many different creatures.  It seems however that the most powerful religions have often endorsed a human domination of the world and environment around them.  This selfish drive is more in-line with the rest of the animal kingdom as every animal fights to survive, flourish, and ultimately do what they believe best serves their interests.  Either way, elevating human importance can provide many with a sense of purpose regardless of what they think that purpose is.  This sense of purpose can be important, especially for those that recognize how short our human history has been relative to the history of all life on Earth, and also how relatively insignificant our planet is in such an unfathomably large universe.  Giving humans a special purpose can also help those that are uncomfortable with the idea of living in such a mechanistic world.

Desire for Protection

Certainly people are going to feel more secure if they believe that there is someone or something that is always protecting them.  Whether or not we have people in our lives that protect us in one way or another, nothing can compare to a divine protector.  It is certainly possible that this desire for protection is an artifact of the maternal-child dynamic from one’s earliest years of life, thus driving us to seek out similar comforts and securities.  Generally speaking however, the desire for protection is yet another facet of the biological imperative to survive.  Either way, the desire for some form of protection has likely played a role in religious constructs.

If religious members fail to receive any obvious protection or safety in specific cases (i.e. if they are harmed in some way), it is often the case that many find a way to reconcile this actuality by coincidentally believing that whatever happens is ultimately governed by some god’s will or plan.  This way the comforts of believing in a protective, benevolent, or loving god are not jeopardized in any circumstance.  This is a good example of cognitive dissonance reduction being accomplished through theological rationalization.  That is, people may need a special combination of beliefs (which may evolve over time) in order to reconcile their religious and theological presuppositions with one another or with reality.

Group Dynamics

Another form of protection (and an evident form at that) offered by religious membership is that which results from group formation and dynamics.  Specifically, I am referring to the benefits of both protection and memetic reinforcement by the rest of the group.  From an evolutionary perspective, we can see that an individual will tend to have a greater survival advantage if they are a member of a cooperative group (as I mentioned previously in the section titled: “Morality, Justice, and Manipulation”).  For this reason and many others, people will often try to join or form groups.  There is always greater power in large numbers, and so even if certain religious claims or elements are difficult to accept, many people will instinctually flock toward the group and its example because it is safer than being alone and more vulnerable.  After joining a group (or perhaps in order to join the group) many may even find themselves behaving in ways that violate their own previously self-ascribed values.  Group dynamics and tendencies can be quite powerful indeed.

After a religion becomes well established and gains enough mass and momentum, people increasingly gravitate toward its power and influence even if that requires them to significantly modify their behavior.  In fact, if the religion gains enough influence and power over a culture or society, there may be little (if any) freedom to refrain from practicing the religion anyway, so even if people aren’t drawn to a popular religion, they may be forced into it.

So as we can see, group dynamics have likely influenced religion in multiple ways.  The memetic reinforcement that groups provide has promoted the success and perpetuation of particular religious memes (regardless of what those particular memes are).  There also seems to be a critical mass component, whereby after a religion gains enough mass and momentum, it is significantly more difficult for it to subside over time.  Thus, many religions that have become successful have done so by simply reaching some critical mass.

God of the gaps

Another reason that many religions or religious memes have been successful has been due to a lack of knowledge about nature.  That is, at some point in the past there arose a “god of the gaps” mentality whereby unsatisfactory, insufficient, or non-existent naturalistic explanations led to deistic or theistic presuppositions.  We’ve seen that for a large period in history, polytheism was quite popular as people were ascribing multiple gods to explain a multitude of phenomena.  Eventually some monotheistic religions precipitated but they merely replaced the multiple “gods of the gaps” with one single “God of the gaps”.  This consolidation of gods may have resulted (at least in part) from an application of Occam’s razor as well as to differentiate new religions and their respective doctrines from their polytheistic predecessors.  As science and empiricism continued to develop further in the wake of these religious world views, the phenomena previously ascribed to a god (or to many gods) became increasingly explainable by predictable, mechanistic, natural laws.  By applying Occam’s razor one last time, science and empiricism has effectively been eliminating the final “God of the gaps”.

The psychological, social, and political benefits given by various religious constructs (including but not limited to those I’ve mentioned within this post) had likely already set a precedent and established a level of momentum that would continue to impede the acceptance of scientific explanations — even up to this day.  This may help to explain the prevalence of supernatural or miraculous religious beliefs despite their incompatibility with science and empiricism.  Once the most powerful religions gained traction, rather than abandoning beliefs of the supernatural in the wake of scientific progress, it was science that was initially censored and hindered.  Eventually, science and religion began to co-exist more easily, but in order for them to be at all reconciled with one another, many religious interpretations or explanations were modified accordingly (or the religious followers continued to ignore science).  Belief can be extremely powerful — so powerful in fact that even if a proposition isn’t actually true, if a person believes it to be true strongly enough, it can become a reality for that person.  In some of these cases, it doesn’t matter if there is an overwhelming amount of evidence to refute the belief, for that evidence will be ignored if it does not corroborate the believer’s artificial reality.

Another “God of the gaps” example that still perpetuates many religious beliefs is the mis-attributed power of prayer.  Prayer is actually effective for healing or helping to heal some ailments (for example), but science has shown (and is continuing to show) how this is nothing more than a placebo effect.  To give just one example, several studies on heart patients demonstrated that prayer was only effective on their recovery when the patients knew that they were being prayed for.  This further illustrates how the “God of the gaps” argument has never been very strong, and is only shrinking with every new discovery made in science.  Nevertheless, even as evidence accumulates that shows how a religious person’s notions are incorrect, there are psychological barriers in the brain that keep one from accepting that new information.  In the case of prayer just mentioned, a person who believes in prayer will have a confirmation bias in their brain that serves to remember when prayers are “answered” and forget about prayers that are not (regardless of what is being prayed for).

In other cases, if one chooses to actually consider any refutative evidence, it can become extremely difficult if not impossible for one to reconcile certain religious beliefs with reality.  However, if it is psychologically easier for a person to modify their religious beliefs (even in some radical way) rather than abandoning their religion altogether, they will likely do so.  It is clear how powerful these religious driving factors are when we see people either blatantly ignoring reason and the senses and/or adjusting their religion or theology in order to reconcile their beliefs with reality such that they can maintain the comfort and security of their deeply invested religious convictions.

It should be noted that the “god(s) of the gaps” mentality that many people share may result when the human mind asks certain questions for which it doesn’t have the cognitive machinery to answer, regardless of any scientific progress made.  If they are answerable questions (in theory), it may take a substantial amount of cognitive evolution in order to have the capability to answer them (or in order to see certain questions as being completely irrational and thus eliminate them from any further inquiry).  Even if this epistemologically-enhancing level of cognitive evolution did take place, we may very well be defined as a new species anyway, and thus technically speaking, homo sapiens could forever remain unable to access this knowledge regardless.  It would then follow that the “god(s) of the gaps” mentality (and any of its byproducts) may forever be a part of “human” nature.  Time will tell.

Final Thoughts

It appears that there have been several evolutionary, psychological, social, and political factors that have likely influenced the formation, acceptance, and ultimate success of many religious constructs.  It seems that the largest factors influencing religious constructs (and thus the commonalities seen between many religions) have been the psychological comforts that religion has provided, the human cognitive limitations leading to supernatural explanations, as well as some naturally-selected survival advantages that have ensued.  The desire for these psychological comforts (likely unconscious although not necessarily) seems to catalyze the manifestation of extremely strong beliefs, and not only has this affected the interplay between science (or empiricism) and religion, but these desires have also made it easier for religion to be used for manipulative purposes (among other reasons).  Furthermore, cognitive biases in the human brain often serve to maintain one’s beliefs, despite contradictory evidence against them.  Perhaps it is not too surprising to see such a complex interplay of variables behind religion, and also so many commonalities, as religion has been an extremely significant facet of the human condition.

Technology, Evolution, and the Fate of Mankind

with 2 comments

Introduction

One could easily argue that human technology is merely a by-product of evolution, or to be more specific, a by-product of natural selection, since any animal possessing a brain and body capable of manipulating their environment to such a high degree is likely to have a higher survival rate than those that do not.  Technology can also be seen as an external evolving feature of the human race, that is, it is changing over time based on environmental pressures that exist, yet it is evolving somewhat independently of our own physical evolution.  Environmental pressures aside, it is clear that our technology has also evolved as a result of our own desire for convenience, entertainment, and pure novelty.  Throughout this post, I plan to discuss our intimate relationship with technology, its evolutionary effects, and also how this may affect the future of our species.

Necessity for Survival?

While technology has provided us with many conveniences, it has also become something that many have come to rely on for their survival (albeit to varying degrees).  Certainly one of our largest problems as a species is our unprecedented reliance on so much technology, not to mention the lack of sustainability for its use.  We have so much infrastructure utilizing enormous amounts of non-renewable fossil fuels, and a host of other interconnected electro-mechanical technologies required for the operation of our civilized world.  We also have medicine and other medical devices that so many depend on, whether to survive an accident, to combat a chronic illness, or to compensate for any number of genetic shortcomings.  Whether it’s a need for prescription glasses, anti-biotics, or a dialysis machine, it is clear that there are a large number of people that couldn’t live without many of these technologies (or would be much less likely to survive without it).

Genetic Change Induced by Technology and Society

I find it interesting to think about how the gene pool has changed as a result of our technology.  There are a considerable number of people living with various life-threatening illnesses, poor eye-sight, obesity, diabetes, sexual dysfunction, etc., due in part to the fact that various synthesized pharmaceuticals and medical advancements have allowed many of these people to live long enough and reproduce.  Not long ago, many people living with these types of impairments would have died young and their genes would have been eradicated.  Now it goes without saying that any advancements we’ve made in terms of genetic engineering or gene therapy, that is, any advancements that actually increase our fitness genetically (and can thus be passed on to future offspring), are not an issue.  Rather, it is all of the other advancements that have merely provided a band-aid approach in order for the genetically less-endowed individuals to survive and reproduce.

Now granted, many of the health problems we encounter in society are largely a result of environmental circumstances (caused by technology or otherwise) transpiring ontogenically as opposed to those which are largely inherited genetically.  There are also a large number of conditions surfacing simply because we’ve increased our life expectancy in such a short amount of time.  Regardless, the gene pool has indeed been affected by a plethora of heritable factors resulting from our technologically pampered society.

It must be said that our gene pool has seen this genetically sub-par influx partly due to the fact that the previous environmental pressures that would have eradicated these genes has been replaced with a technologically savvy super-organism that values human life regardless of how much each life contributes to, or detracts from, the longevity of our species.  Unlike most species, we are at least self-aware, and many of us fully understand the possibility that some of our choices may lead to the extinction of our species (as well as others).  However, I believe that this possibility of extinction hasn’t been taken very seriously and thus there hasn’t been enough invested in evaluating the direction we are heading as a species, let alone the direction we are heading as an entire planet.

Engineered Selection

Now it may be that one day our technology will allow us to understand and manipulate our genome (or that of any other species) such that we can prevent and/or cure any disease or handle any environmental change, effectively eliminating our form of natural selection from the evolutionary equation.  After all, if we could simply modify our gene pool in order to survive any environmental change that is otherwise out of our control, then the gradual course for natural selection and the mutations previously required to make it an effective mechanism, would be replaced by what I would call an “engineered selection”.

We’ve already greatly altered natural selection (relative to other animals) by manipulating our own environmental pressures via technology.  We’ve also created artificial selection (i.e. selective breeding) and utilized this to domesticate various plants and animals, as well as to create breeds possessing traits we find advantageous.  If we actually managed to complement this with a mastery in genetic engineering technology, we would potentially be able to “select” our own species (and the future species we’d become) indefinitely.  The key would be in understanding genetic causal relationships, even if this knowledge required the use of complex genetic evolutionary simulations, supercomputers, etc.

I definitely think that the most significant change for our species lies in this field of genetic engineering, as opposed to any other technological niche.  The possibilities provided by mastering genetic engineering are endless.  We may use it in order to design future offspring with genetic traits that we’re already familiar with (preferably to increase their fitness in the present environment as opposed to superficial motivations), we may add traits from other species (e.g. ability to re-grow limbs, develop wings so we can fly, etc.), or we may even employ some method of integrating communication devices or other deemed “synthetic” technologies into our bodies such that they are biologically grown and repairable, etc.  Humans may use this to genetically engineer brains such that the resulting consciousness has completely different properties, or they may be able to use genetic engineering to create consciousness in a biological “robot”.  If genetically engineered brains result in a more beneficial form of consciousness, higher intelligence, etc., then genetic engineering may end up as a sort of cognitive-evolutionary/technological catalyst thus allowing us to exponentially increase our capacities to solve problems and build ever more advanced technologies.  That is, our enhanced brains and the resulting technology produced would help us to further enhance our brains and technology ad infinitum.  The possibilities are endless if we manage to acquire enough knowledge, acquire the ability to produce engineered DNA sequences, and potentially acquire a way to accelerate the ontogenic evolution of anything produced in order to verify experimental hypotheses/theories in the absence of sufficient computer simulation capabilities.

Fate of Mankind

We are definitely on the cusp of a potentially dramatic evolutionary change for our species.  However, we are also at a very vulnerable stage, for much of our technology has caused our gene pool to regress in terms of physical fitness within a society that could one day be deprived of much of this technology.  Technology has also led to an incredible population explosion, mainly due to agriculture and the fossil-fuel-catalyzed industrial revolution.  This population explosion has helped us in some ways by providing an increase in idea collaboration (thus leading to an exponential increase in technological evolution), but it has also led to much more disastrous effects on the environment including an increased difficulty in sustainability.

Now from an evolutionary perspective, one could argue that currently, our technology is but an extension of ourselves, and our well-developed brains have more than compensated for our physical regression.  While this claim has some truth to it (at the moment anyway), if we lost our ability to mass-produce the technology required for industrialized agriculture, running water, medicine, transportation, sanitation, etc., whether caused by depleting our non-renewable energy sources or even caused by something like a solar-induced electro-magnetic pulse that takes out our power distribution systems (i.e. the entire electrical grid), how many would perish as a result?  In my opinion, the ideal level of evolutionary progression should be such that removing any non-renewable energy source or other vulnerable technology isn’t catastrophic to the survival of our species.  This way our species is less vulnerable to anything that forces us to take a step backwards.  Currently, if we did lose our non-renewable infrastructure, I believe it would be catastrophic and it would be the hunter-gatherers and/or smaller-scale agrarians (i.e. those that are completely off the grid) that would survive, rise up and once again dominate the gene pool as was the case with our ancestors.

Will we survive until an exclusively “engineered selection” is attained?  Or will we simply fall off the evolutionary cusp and potentially extinguish ourselves with the very technology that led to civilization in the first place?  The answer may depend on our level of respect and caution for the technology we so often take for granted.