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“The Brothers Karamazov” – A Moral & Philosophical Critique (Part III)

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In the first two posts that I wrote in this series (part I and part II) concerning some concepts and themes mentioned in Dostoyevksy’s The Brothers Karamazov, I talked about moral realism and how it pertains to theism and atheism (and the character Ivan’s own views), and I also talked about moral responsibility and free will to some degree (and how this related to the interplay between Ivan and Smerdyakov).  In this post, I’m going to look at the concept of moral conscience and intuition, and how they apply to Ivan’s perspective and his experiencing an ongoing hallucination of a demonic apparition.  This demonic apparition only begins to haunt Ivan after hearing that his influence on his brother Smerdyakov led him to murder their father Fyodor.  The demon continues to torment Ivan until just before his other brother Alyosha informs him that Smerdyakov has committed suicide.  Then I’ll conclude with some discussion on the concept of moral desert (justice).

It seems pretty clear that the demonic apparition that appears to Ivan is a psychosomatic hallucination brought about as a manifestation of Ivan’s overwhelming guilt for what his brother has done, since he feels that he bears at least some of the responsibility for his brothers actions.  We learn earlier in the story that Zosima, a wise elder living at a monastery who acts as a mentor and teacher to Alyosha, had explained to Ivan that everyone bears at least some responsibility for the actions of everyone around them because human causality is so heavily intertwined with one person’s actions having a number of complicated effects on the actions of everyone else.  Despite Ivan’s strong initial reservations against this line of reasoning, he seems to have finally accepted that Zosima was right — hence him suffering a nervous breakdown as a result of realizing this.

Obviously Ivan’s moral conscience seems to be driving this turn of events and this is the case whether or not Ivan explicitly believes that morality is real.  And so we can see that despite Ivan’s moral skepticism, his moral intuitions and/or his newly accepted moral dispositions as per Zosima, have led him to his current state of despair.  Similarly, Ivan’s views on the problem of evil — whereby the vast amount of suffering in the world either refutes the existence of God, or shows that this God (if he does exist) must be a moral monster — betray even more of Ivan’s moral views with respect to how he wants the world to be.  His wanting the world to have less suffering in it, along with his wishing that his brother had not committed murder (let alone as a result of his influence on his brother), illustrates a number of moral “oughts” that Ivan subscribes to.  And whether they’re simply based on his moral intuitions or also rational moral reflection, they illustrate the deeply rooted psychological aspects of morality that are an inescapable facet of the human condition.

This situation also helps to explain some of the underlying motivations behind my own reversion back toward some form of moral realism, after becoming an atheist myself, initially catalyzed by my own moral intuitions and then later solidified and justified by rational moral reflection on objective facts pertaining to human psychology and other factors.  Now it should be said that moral intuitions on their own are only a generally useful heuristic as they are often misguiding (and incorrect) which is why it is imperative that they are checked by a rational assessment of the facts at hand.  But, nevertheless, they help to illustrate how good and evil can be said to be real (in at least some sense), even to someone like Ivan that doesn’t think they have an objective foundation.  They may not be conceptions of good and evil as described in many religions, with supernatural baggage attached, but they are real nonetheless.

Another interesting point worth noting is in regard to Zosima’s discussion about mutual moral responsibility.  While I already discussed moral responsibility in the last post along with its relation to free will, there’s something rather paradoxical about Dostoyevsky’s reasoning as expressed through Zosima that I found quite interesting.  Zosima talks about how love and forgiveness are necessary because everyone’s actions are intertwined with everyone else’s and therefore everyone bears some responsibility for the sins of others.  This idea of shared responsibility is abhorrent to those in the story that doubt God and the Christian religion (such as Ivan), who only want to be responsible for their own actions, but the complex intertwined causal chain that Zosima speaks of is the same causal chain that many determinists invoke to explain our lack of libertarian free will and how we can’t be held responsible in a causa sui manner for our actions.

Thus, if someone dies and there is in fact an afterlife, by Zosima’s own reasoning that person should not be judged as an individual solely responsible for their actions either.  That person should instead receive unconditional love and forgiveness and be redeemed rather than punished.  But this idea is anathema to standard Christian theology where one is supposed to be judged and given eternal paradise or eternal torment (with vastly disproportionate consequences given the finite degree of one’s actions).  It’s no surprise that Zosima isn’t looked upon as a model clergyman by some of his fellow monks in the monastery because his emphatic preaching about love and forgiveness undermines the typical heavy-handed judgemental aspects of God within Christianity.  But in any case, if God exists and understood that people were products of their genes and their environment which is causally interconnected with everyone else’s (i.e. libertarian free will is logically impossible), then a loving God would grant everyone forgiveness after death and grant them eternal paradise based on that understanding.  And oddly enough, this also undermines Ivan’s own reasoning that good and evil can only exist with an afterlife that undergoes judgement, because forgiveness and eternal paradise should be granted to everyone in the afterlife (by a truly loving God) if Zosima’s reasoning was taken to it’s logical conclusions.  So not only does Zosima’s reasoning seem to undermine the justification for unequal treatment of souls in the afterlife, but it also undermines the Christian conception of free will to boot (which is logically impossible regardless of Zosima’s reasoning).

And this brings me to the concept of moral desert.  In some ways I agree with Zosima, at least in the sense that love (or more specifically compassion) and forgiveness are extremely important in proper moral reasoning. And once one realizes the logical impossibility of libertarian free will, this should only encourage one’s use of love and forgiveness in the sense that people should never be trying to punish a wrongdoer (or hope for their punishment) for the sake of retributive justice or vengeance.  Rather, people should only punish (or hope that one is punished) as much as is necessary to compensate the victim as best as the circumstances allow and (more importantly) to rehabilitate the wrongdoer by reprogramming them through behavioral conditioning.  Anything above and beyond this is excessive, malicious, and immoral.  Similarly, a loving God (if one existed) would never punish anyone in the afterlife beyond what is needed to rehabilitate them (and it would seem that no punishment at all should really be needed if this God had the power to accomplish these feats on immaterial souls using magic), and if this God had no magic to accomplish this, then at the very least, it would still mean that there should never by any eternal punishments, since punishing someone forever (let alone torturing them forever), not only illustrates that there is no goal to rehabilitate the wrongdoer, but also that this God is beyond psychopathic and malevolent.  Again, think of Zosima’s reasoning as it applies here.

Looking back at the story with Smerdyakov, why does the demonic apparition disappear from Ivan right around the time that he learns that Smerdyakov killed himself?  It could be because Ivan thinks that Smerdyakov has gotten what he deserved, and that he’s no longer roaming free (so to speak) after his heinous act of murder.  And it could also be because Ivan seemed sure at that point that he would confess to the murder (or at least motivating Smerdyakov to do it).  But if either of these notions are true, then once again Ivan has betrayed yet another moral disposition of his, that murder is morally wrong.  It may also imply that Ivan, deep down, may in fact believe in an afterlife, and that Smerdyakov will now be judged for his actions.

It no doubt feels good to a lot of people when they see someone that has wronged another, getting punished for their bad deeds.  The feeling of justice and even vengeance can be so emotionally powerful, especially if the wrongdoer took the life of someone that you or someone else loved very much.  It’s a common feeling to want that criminal to suffer, perhaps to rot in jail until they die, perhaps to be tortured, or what-have-you.  And these intuitions illustrate why so many religious beliefs surrounding judgment in the afterlife share many of these common elements.  People invented these religious beliefs (whether unconsciously or not) because it makes them feel better about wrongdoers that may otherwise die without having been judged for their actions.  After all, when is justice going to be served?  It is also a motivating factor for a lot of people to keep their behaviors in check (as per Ivan’s rationale regarding an afterlife requirement in order for good and evil to be meaningful to people).  Even though I don’t think that this particular motivation is necessary (and therefore Ivan’s argument is incorrect) — due to other motivating forces such as the level of fulfillment and personal self-worth in one’s life, gained through living a life of moral virtue, or the lack thereof by those that fail to live virtuously — it is still a motivation that exists with many people and strongly intersects with the concept of moral desert.  Due to its pervasiveness in our intuitions and how we perceive other human beings and its importance in moral theory in general, people should spend a lot more time critically reflecting on this concept.

In the next part of this post series, I’m going to talk about the conflict between faith and doubt, perhaps the most ubiquitous theme found in The Brothers Karamazov, and how it ties all of these other concepts together.

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“The Brothers Karamazov” – A Moral & Philosophical Critique (Part II)

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In my last post in this series, concerning Dostoyevsky’s The Brothers Karamazov, I talked about the concept of good and evil and the character Ivan’s personal atheistic perception that they are contingent on God existing (or at least an afterlife of eternal reward or punishment).  While there may even be a decent percentage of atheists that share this view (objective morality being contingent on God’s existence), I briefly explained my own views (being an atheist myself) which differs from Ivan’s in that I am a moral realist and believe that morality is objective independent of any gods or immortal souls existing.  I believe that moral facts exist (and science is the best way to find them), that morality is ultimately grounded on objective facts pertaining to human psychology, biology, sociology, neurology, and other facts about human beings, and thus that good and evil do exist in at least some sense.

In this post, I’m going to talk about Ivan’s influence on his half-brother, Smerdyakov, who ends up confessing to Ivan that he murdered their father Fyodor Pavlovich, as a result of Ivan’s philosophical influence on him.  In particular, Smerdyakov implicates Ivan as at least partially responsible for his own murderous behavior since Ivan successfully convinced him that evil wasn’t possible in a world without a God.  Ivan ends up becoming consumed with guilt, basically suffers a nervous breakdown, and then is incessantly taunted by a demonic apparition.  The hallucinations continue up until the moment Ivan comes to find out, from his very religious brother Alyosha, that Smerdyakov has hung himself.  This scene highlights a number of important topics beyond the moral realism I discussed in the first post, such as moral responsibility, free will, and even moral desert (I’ll discuss this last topic in my next post).

As I mentioned before, beyond the fact that we do not need a god to ground moral values, we also don’t need a god or an afterlife to motivate us to behave morally either.  By cultivating moral virtues such as compassion, honesty, and reasonableness, and analyzing a situation using a rational assessment of as many facts as are currently accessible, we can maximize our personal satisfaction and thus our chances of living a fulfilling life.  Behavioral causal factors that support this goal are “good” and those that detract from it are “evil”.  Aside from these labels though, we actually experience a more or less pleasing life depending on our behaviors and therefore we do have real-time motivations for behaving morally (such as acting in ways that conform to various cultivated virtues).  Aristotle claimed this more than 2000 years ago and moral psychology has been confirming it time and time again.

Since we have evolved as a particular social species with a particular psychology, not only do we have particular behaviors that best accomplish a fulfilling life, but there are also various behavioral conditioning algorithms and punishment/reward systems that are best at modifying our behavior.  And this brings me to Smerdyakov.  By listening to Ivan and ultimately becoming convinced by Ivan’s philosophical arguments, he seems to have been conditioned out of his previous views on moral responsibility.  In particular, he ended up adopting the belief that if God does not exist, then anything is permissible.  Since he also rejected a belief in God, he therefore thought he could do whatever he wanted.

One thing this turn of events highlights is that there are a number of different factors that influence people’s behaviors and that lead to their being reasoned into doing (or not doing) all sorts of things.  As Voltaire once said “Those who can make you believe absurdities can also make you commit atrocities.  And I think what Ivan told Smerdyakov was in fact absurd — although it was a belief that I once held as well not long after becoming an atheist.  For it is quite obviously absurd that anything is permissible without a God existing for at least two types of reasons: pragmatic considerations and moral considerations (with the former overlapping with the latter).  Pragmatic reasons include things like not wanting to be fined, incarcerated, or even executed by a criminal justice system that operates to minimize illegal behaviors.  It includes not wanting to be ostracized from your circle of friends, your social groups, or your community (and risking the loss of beneficial reciprocity, safety nets, etc.).  Moral reasons include everything that detracts from your overall psychological well-being, the very thing that is needed to live a maximally fulfilling life given one’s circumstances.  Behaving in ways that degrade your sense of inner worth, your integrity, self-esteem, and that diminish a good conscience, is going to make you feel miserable compared to behaving in ways that positively impact these fundamental psychological goals.

Furthermore, this part of the story illustrates that we have a moral responsibility not only to ourselves and our own behavior, but also in terms of how we influence the behavior of those around us, based on what we say, how we treat them, and more.  This also reinforces the importance of social contract theory and how it pertains to moral behavior.  If we follow simple behavioral heuristics like the Golden Rule and mutual reciprocity, then we can work together to obtain and secure common social goods such as various rights, equality, environmental sustainability, democratic legislation (ideally based on open moral deliberation), and various social safety nets.  We also can punish those that violate the social contract, as we already do with the criminal justice system and various kinds of social ostracization.  While our system of checks is far from perfect, having some system that serves such a purpose is necessary because not everybody behaves in ways that are ultimately beneficial to themselves nor everyone else around them.  People need to be conditioned to behave in ways that are more conducive to their own well being and that of others, and if all reasonable efforts to achieve that fails, they may simply need to be quarantined through incarceration (for example psychopaths or other violent criminals that society needs to be protected from, and that aren’t responding to rehabilitation efforts).

In any case, we do have a responsibility to others and that means we need to be careful what we say, such as the case with Ivan and his brother.  And this includes how we talk about concepts like free will, moral responsibility, and moral desert (justice).  If we tell people that all of their behaviors are determined and therefore don’t matter, that’s not a good way to get people to behave in ways that are good for them or for others.  Nor is telling them that because a God doesn’t exist, that their actions don’t matter.  In the case of deterministic nihilism, it’s a way to get people to lose much if not all of their motivation to put forward effort in achieving useful goals.  And both deterministic and atheistic moral nihilism are dangerous ideas that can get some people to commit heinous crimes such as mass shootings (or murdering their own father as Smerdyakov did), because they simply cause people to think that all behaviors are on equal footing in any way that matters.  And quite frankly, those nihilistic ideas are not only dangerous but also absurd.

While I’ve written a bit on free will in the past, my views have become more refined over the years, and my overall attitude towards the issue has been co-evolving alongside my views on morality.  The main crux of the free will issue is that libertarian free will is logically impossible because our actions are never free from both determinism and indeterminism (randomness) since one or the other must underlie how our universe operates (depending on which interpretation of Quantum Mechanics is correct).  Neither option from this logical dichotomy gives us “the freedom to have chosen to behave differently given the same initial conditions in a non-random way”.  Therefore free will in this sense is logically impossible.  However, this does not mean that our behavior isn’t operating under some sets of rules and patterns that we can discover and modify.  That is to say, we can effectively reprogram many of our behavioral tendencies using various forms of conditioning through punishment/reward systems.  These are the same systems we use to teach children how to behave and to rehabilitate criminals.

The key thing to note here is that we need to acknowledge that even if we don’t have libertarian free will, we still have a form of “free will” that matters (as philosophers like Daniel Dennett have said numerous times) whereby we have the ability to be programmed and reprogrammed in certain ways, thus allowing us to take responsibility for our actions and design ways to modify future actions as needed.  We have more degrees of freedom than a person who is insane for example, or a child, or a dog, and these degrees of freedom or autonomy — the flexibility we have in our decision-making algorithms — can be used as a rough guideline for determining how “morally responsible” a person is for their actions.  That is to say, the more easily a person can be conditioned out of a particular behavior, and the more rational decision making processes are involved in governing that behavior, the more “free will” this person has in a sense that applies to a criminal justice system and that applies to most of our everyday lives.

In the end, it doesn’t matter whether someone thinks that their behavior doesn’t matter because there’s no God, or because they have no libertarian free will.  What needs to be pointed out is the fact that we are able to behave in ways (or be conditioned to behave in ways) that lead to more happiness, more satisfaction and more fulfilling lives.  And we are able to behave in ways that detract from this goal.  So which behaviors should we aim for?  I think the answer is obvious.  And we also need to realize that as a part of our behavioral patterns, we need to realize that ideas have consequences on others and their subsequent behaviors.  So we need to be careful about what ideas we choose to spread and to make sure that they are put into a fuller context.  If a person hasn’t given some critical reflection about the consequences that may ensue from spreading their ideas to others, especially to others that may misunderstand it, then they need to keep those ideas to themselves until they’ve reflected on them more.  And this is something that I’ve discovered and applied for myself as well, as I was once far less careful about this than I am now.  In the next post, I’m going to talk about the concept of moral desert and how it pertains to free will.  This will be relevant to the scene described above regarding Ivan’s demonic apparition that haunts him as a result of his guilt over Smerdyakov’s murder of their father, as well as why the demonic apparition disappeared once Ivan heard that Smerdyakov had taken his own life.

CGI, Movies and Truth…

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After watching Rogue One: A Star Wars Story, which I liked, though not nearly as much as the original trilogy (Episodes IV, V, and VI), it got me thinking more about something I hadn’t thought about since the most recent presidential election.  As I watched Grand Moff Tarkin and Princess Leia, both characters made possible in large part thanks to CGI (as well as the help of actors Ingvild Deila and Guy Henry), I realized that although this is still a long way away, it is inevitable that (barring a nuclear world war or some other catastrophe that kills us all or sets us back to a pre-industrialized age) the pace of this technology will eventually lead to CGI products that are completely indistinguishable from reality.

This means that eventually, the “fake news” issue that many have been making a lot of noise about as of late, will one day take a new and ugly turn for the worse.  Not only is video and graphic technology accelerating at a fairly rapid pace to exacerbate this problem, but similar concerns are also arising as a result of voice editing software.  By simply gathering several seconds of sample audio from a person of interest, various forms of software are getting better and better at synthesizing their speech in order to mimic them — putting whatever words into “their” mouths that one so desires.

The irony here is that this means that despite the fact that we are going to continue becoming more and more globally interconnected, technologically advanced, and gain more global knowledge, it seems that we will eventually reach a point where each individual becomes less and less able to know what is true and what isn’t in all the places that you are electronically connected to.  One reason for this is that, as per the opening reference to Rogue One, it will become increasingly difficult to judge the veracity of videos that go viral on the internet and/or through news outlets.  We can imagine seeing a video (or many series of videos) released on the news and throughout the internet containing shocking events with real world leaders or other famous people, places, and so forth, events that could possibly start a civil or world war, alter one’s vote, or otherwise — but with the caveat that these events are entirely manufactured by some Machiavellian warmonger or power seeking elite.

Pragmatically speaking, we must still live our lives trusting what we see in proportion to the evidence we have, thus believing ordinary claims with a higher degree of confidence than extraordinary ones.  We will still need to hold to the general rule of extraordinary claims requiring extraordinary evidence in order to meet their burden of proof.  But it will become more difficult to trust certain forms of evidence (including in a court of law), so we’ll have to take that into consideration so that actions that result in more catastrophic consequences (if your assumptions/information turn out to be based on false evidence) require a higher burden of proof — once we are able to successfully pass some kind of graphics Touring Test.

This is by no means an endorsement for conspiracy theories generally nor any other anti-intellectual or dogmatic non-sense. We don’t want people to start doubting everything they see nor to start doubting everything they don’t WANT to see (which would be a proverbial buffet for our cognitive biases and the conspiracy theorists that make use of these epistemological flaws regularly), we still need to take this dynamic technological factor into account to maintain a world view based on proper Bayesian reasoning.

On the brighter side of things, we are going to get to enjoy much of what the new CGI capabilities will bring to us, because movies and all visual entertainment are going to be revolutionarily changed forever in many ways that will be worth celebrating, including our use of virtual reality generally (many various forms that we do and will continue to consciously and rationally desire). We just need to pay attention and exercise some careful moral deliberation as we develop these technologies. Our brains simply didn’t evolve to easily avoid being duped by artificial realities like the ones we’re developing (we already get duped far too often within our actual reality), so we need to engineer our path forward in a way that will better safeguard us from our own cognitive biases so we can maximize our well being once this genie is out of the bottle.

Co-evolution of Humans & Artificial Intelligence

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In my last post, I wrote a little bit about the concept of personal identity in terms of what some philosophers have emphasized and my take on it.  I wrote that post in response to an interesting blog post written by James DiGiovanna over at A Philosopher’s Take.  James has written another post related to the possible consequences of integrating artificial intelligence into our societal framework, but rather than discussing personal identity as it relates to artificial intelligence, he discussed how the advancements made in machine learning and so forth are leading to the future prospects of effective companion AI, or what he referred to as programmable friends.  The main point he raised in that post was the fact that programmable friends would likely have a very different relationship dynamic with us compared with our traditional (human) friends.  James also spoke about companion AI  in terms of their also being laborers (as well as being friends) but for the purposes of this post I won’t discuss these laborer aspects of future companion AI (even if the labor aspect is what drives us to make companion AI in the first place).  I’ll be limiting my comments here to the friendship or social dynamic aspects only.  So what aspects about programmable AI should we start thinking about?

Well for one, we don’t currently have the ability to simply reprogram a friend to be exactly as we want them to be, in order to avoid conflicts entirely, to share every interest we have, etc., but rather there is a bit of a give-and-take relationship dynamic that we’re used to dealing with.  We learn new ways of behaving and looking at the world and even new ways of looking at ourselves when we have friendships with people that differ from us in certain ways.  Much of the expansion and beneficial evolution of our perspectives are the result of certain conflicts that arise between ourselves and our friends, where different viewpoints can clash against one another, often forcing a person to reevaluate their own position based on the value they place on the viewpoints of their friends.  If we could simply reprogram our friends, as in the case with some future AI companions, what would this do to our moral, psychological and intellectual growth?  There would be some positive effects I’m sure (from having less conflict in some cases and thus an increase in short term happiness), but we’d definitely be missing out on a host of interpersonal benefits that we gain from having the types of friendships that we’re used to having (and thus we’d likely have less overall happiness as a result).

We can see where evolution ties in to all this, whereby we have evolved as a social species to interact with others that are more or less like us, and so when we envision these possible future AI friendships, it should become obvious why certain problems would be inevitable largely because of the incompatibility with our evolved social dynamic.  To be sure, some of these problems could be mitigated by accounting for them in the initial design of the companion AI.  In general, this could be done by making the AI more like humans in the first place and this could be something advertised as some kind of beneficial AI “social software package” so people looking to get companion AI would be inclined to get this version even if they had the choice to go for the entirely reprogrammable version.

Some features of a “social software package” could be things like a limit on the number of ways the AI could be reprogrammed such that only very serious conflicts could be avoided through reprogramming, but without the ability to avoid all conflicts.  It could be such that the AI are able to have a weight on certain opinions, just as we do, and to be more assertive with regard to certain propositions and so forth.  Once the AI has learned its human counterpart’s personality, values, opinions, etc., it could also be programmed with the ability to intentionally challenge that human by offering different points of view and by its using the Socratic method (at least from time to time).  If people realized that they could possibly gain wisdom, knowledge, tolerance, and various social aptitudes from their companion AI, I would think that would be a marked selling point.

Another factor that I think will likely play a role in mitigating the possible social dynamic clash between companion AI (that are programmable) and humans is the fact that humans are also likely to become more and more integrated with AI technology generally.  That is, as humans are continuing to make advancements in AI technology, we are also likely to integrate a lot of that technology into ourselves, to make humans more or less into cyborgs a.k.a. cybernetic organisms.  If we see the path we’re on already with all the smart phones, apps, and other gadgets and computer systems that have started to become extensions of ourselves, we can see that the next obvious step (which I’ve mentioned elsewhere, here and here) is to remove the external peripherals so that they are directly accessible via our consciousness with no need of interfacing with external hardware and so forth.  If we can access “the cloud” with our minds (say, via bluetooth or the like), then the apps and all the fancy features can become a part of our minds, adding to the ways that we will be able to think, providing an internet worth of knowledge at our cognitive disposal, etc.  I could see this technology eventually allowing us to change our senses and perceptions, including an ability to add virtual objects that are amalgamated with the rest of the external reality that we perceive (such as adding virtual friends that we see and interact with that aren’t physically present outside of our minds even though they appear to be).

So if we start to integrate these kinds of technologies into ourselves as we are also creating companion AI, then we may also end up with the ability to reprogram ourselves alongside those programmable companion AI.  In effect, our own qualitatively human social dynamic may start to change markedly and become more and more compatible with that of the future AI.  The way I think this will most likely play out is that we will try to make AI more like us as we try to make us more like AI, where we co-evolve with one another, trying to share advantages with one another and eventually becoming indistinguishable from one another.  Along this journey however we will also become very different from the way we are now, and after enough time passes, we’ll likely change so much that we’d be unrecognizable to people living today.  My hope is that as we use AI to also improve our intelligence and increase our knowledge of the world generally, we will also continue to improve on our knowledge of what makes us happiest (as social creatures or otherwise) and thus how to live the best and most morally fruitful lives that we can.  This will include improving our knowledge of social dynamics and the ways that we can maximize all the interpersonal benefits therein.  Artificial intelligence may help us to accomplish this however paradoxical or counter-intuitive that may seem to us now.

Conscious Realism & The Interface Theory of Perception

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A few months ago I was reading an interesting article in The Atlantic about Donald Hoffman’s Interface Theory of Perception.  As a person highly interested in consciousness studies, cognitive science, and the mind-body problem, I found the basic concepts of his theory quite fascinating.  What was most interesting to me was the counter-intuitive connection between evolution and perception that Hoffman has proposed.  Now it is certainly reasonable and intuitive to assume that evolutionary natural selection would favor perceptions that are closer to “the truth” or closer to the objective reality that exists independent of our minds, simply because of the idea that perceptions that are more accurate will be more likely to lead to survival than perceptions that are not accurate.  As an example, if I were to perceive lions as inert objects like trees, I would be more likely to be naturally selected against and eaten by a lion when compared to one who perceives lions as a mobile predator that could kill them.

While this is intuitive and reasonable to some degree, what Hoffman actually shows, using evolutionary game theory, is that with respect to organisms with comparable complexity, those with perceptions that are closer to reality are never going to be selected for nearly as much as those with perceptions that are tuned to fitness instead.  More so, truth in this case will be driven to extinction when it is up against perceptual models that are tuned to fitness.  That is to say, evolution will select for organisms that perceive the world in a way that is less accurate (in terms of the underlying reality) as long as the perception is tuned for survival benefits.  The bottom line is that given some specific level of complexity, it is more costly to process more information (costing more time and resources), and so if a “heuristic” method for perception can evolve instead, one that “hides” all the complex information underlying reality and instead provides us with a species-specific guide to adaptive behavior, that will always be the preferred choice.

To see this point more clearly, let’s consider an example.  Let’s imagine there’s an animal that regularly eats some kind of insect, such as a beetle, but it needs to eat a particular sized beetle or else it has a relatively high probability of eating the wrong kind of beetle (and we can assume that the “wrong” kind of beetle would be deadly to eat).  Now let’s imagine two possible types of evolved perception: it could have really accurate perceptions about the various sizes of beetles that it encounters so it can distinguish many different sizes from one another (and then choose the proper size range to eat), or it could evolve less accurate perceptions such that all beetles that are either too small or too large appear as indistinguishable from one another (maybe all the wrong-sized beetles whether too large or too small look like indistinguishable red-colored blobs) and perhaps all the beetles that are in the ideal size range for eating appear as green-colored blobs (that are again, indistinguishable from one another).  So the only discrimination in this latter case of perception is between red and green colored blobs.

Both types of perception would solve the problem of which beetles to eat or not eat, but the latter type (even if much less accurate) would bestow a fitness advantage over the former type, by allowing the animal to process much less information about the environment by not focusing on relatively useless information (like specific beetle size).  In this case, with beetle size as the only variable under consideration for survival, evolution would select for the organism that knows less total information about beetle size, as long as it knows what is most important about distinguishing the edible beetles from the poisonous beetles.  Now we can imagine that in some cases, the fitness function could align with the true structure of reality, but this is not what we ever expect to see generically in the world.  At best we may see some kind of overlap between the two but if there doesn’t have to be any then truth will go extinct.

Perception is Analogous to a Desktop Computer Interface

Hoffman analogizes this concept of a “perception interface” with the desktop interface of a personal computer.  When we see icons of folders on the desktop and drag one of those icons to the trash bin, we shouldn’t take that interface literally, because there isn’t literally a folder being moved to a literal trash bin but rather it is simply an interface that hides most if not all of what is really going on in the background — all those various diodes, resistors and transistors that are manipulated in order to modify stored information that is represented in binary code.

The desktop interface ultimately provides us with an easy and intuitive way of accomplishing these various information processing tasks because trying to do so in the most “truthful” way — by literally manually manipulating every diode, resistor, and transistor to accomplish the same task — would be far more cumbersome and less effective than using the interface.  Therefore the interface, by hiding this truth from us, allows us to “navigate” through that computational world with more fitness.  In this case, having more fitness simply means being able to accomplish information processing goals more easily, with less resources, etc.

Hoffman goes on to say that even though we shouldn’t take the desktop interface literally, obviously we should still take it seriously, because moving that folder to the trash bin can have direct implications on our lives, by potentially destroying months worth of valuable work on a manuscript that is contained in that folder.  Likewise we should take our perceptions seriously, even if we don’t take them literally.  We know that stepping in front of a moving train will likely end our conscious experience even if it is for causal reasons that we have no epistemic access to via our perception, given the species-specific “desktop interface” that evolution has endowed us with.

Relevance to the Mind-body Problem

The crucial point with this analogy is the fact that if our knowledge was confined to the desktop interface of the computer, we’d never be able to ascertain the underlying reality of the “computer”, because all that information that we don’t need to know about that underlying reality is hidden from us.  The same would apply to our perception, where it would be epistemically isolated from the underlying objective reality that exists.  I want to add to this point that even though it appears that we have found the underlying guts of our consciousness, i.e., the findings in neuroscience, it would be mistaken to think that this approach will conclusively answer the mind-body problem because the interface that we’ve used to discover our brains’ underlying neurobiology is still the “desktop” interface.

So while we may think we’ve found the underlying guts of “the computer”, this is far from certain, given the possibility of and support for this theory.  This may end up being the reason why many philosophers claim there is a “hard problem” of consciousness and one that can’t be solved.  It could be that we simply are stuck in the desktop interface and there’s no way to find out about the underlying reality that gives rise to that interface.  All we can do is maximize our knowledge of the interface itself and that would be our epistemic boundary.

Predictions of the Theory

Now if this was just a fancy idea put forward by Hoffman, that would be interesting in its own right, but the fact that it is supported by evolutionary game theory and genetic algorithm simulations shows that the theory is more than plausible.  Even better, the theory is actually a scientific theory (and not just a hypothesis), because it has made falsifiable predictions as well.  It predicts that “each species has its own interface (with some similarities between phylogenetically related species), almost surely no interface performs reconstructions (read the second link for more details on this), each interface is tailored to guide adaptive behavior in the relevant niche, much of the competition between and within species exploits strengths and limitations of interfaces, and such competition can lead to arms races between interfaces that critically influence their adaptive evolution.”  The theory predicts that interfaces are essential to understanding evolution and the competition between organisms, whereas the reconstruction theory makes such understanding impossible.  Thus, evidence of interfaces should be widespread throughout nature.

In his paper, he mentions the Jewel beetle as a case in point.  This beetle has a perceptual category, desirable females, which works well in its niche, and it uses it to choose larger females because they are the best mates.  According to the reconstructionist thesis, the male’s perception of desirable females should incorporate a statistical estimate of the true sizes of the most fertile females, but it doesn’t do this.  Instead, it has a category based on “bigger is better” and although this bestows a high fitness behavior for the male beetle in its evolutionary niche, if it comes into contact with a “stubbie” beer bottle, it falls into an infinite loop by being drawn to this supernormal stimuli since it is smooth, brown, and extremely large.  We can see that the “bigger is better” perceptual category relies on less information about the true nature of reality and instead chooses an “informational shortcut”.  The evidence of supernormal stimuli which have been found with many species further supports the theory and is evidence against the reconstructionist claim that perceptual categories estimate the statistical structure of the world.

More on Conscious Realism (Consciousness is all there is?)

This last link provided here shows the mathematical formalism of Hoffman’s conscious realist theory as proved by Chetan Prakash.  It contains a thorough explanation of the conscious realist theory (which goes above and beyond the interface theory of perception) and it also provides answers to common objections put forward by other scientists and philosophers on this theory.

Transcendental Argument For God’s Existence: A Critique

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Theist apologists and theologians have presented many arguments for the existence of God throughout history including the Ontological Argument, Cosmological Argument, Fine-Tuning Argument, the Argument from Morality, and many others — all of which having been refuted with various counter arguments.  I’ve written about a few of these arguments in the past (1, 2, 3), but one that I haven’t yet touched on is that of the Transcendental Argument for God (or simply TAG).  Not long ago I heard the Christian apologist Matt Slick conversing/debating with the well renowned atheist Matt Dillahunty on this topic and then I decided to look deeper into the argument as Slick presents it on his website.  I have found a number of problems with his argument, so I decided to iterate them in this post.

Slick’s basic argument goes as follows:

  1. The Laws of Logic exist.
    1. Law of Identity: Something (A) is what it is and is not what it is not (i.e. A is A and A is not not-A).
    2. Law of Non-contradiction: A cannot be both A and not-A, or in other words, something cannot be both true and false at the same time.
    3. Law of the Excluded Middle: Something must either be A or not-A without a middle ground, or in other words, something must be either true or false without a middle ground.
  2. The Laws of Logic are conceptual by nature — are not dependent on space, time, physical properties, or human nature.
  3. They are not the product of the physical universe (space, time, matter) because if the physical universe were to disappear, The Laws of Logic would still be true.
  4. The Laws of Logic are not the product of human minds because human minds are different — not absolute.
  5. But, since the Laws of Logic are always true everywhere and not dependent on human minds, it must be an absolute transcendent mind that is authoring them.  This mind is called God.
  6. Furthermore, if there are only two options to account for something, i.e., God and no God, and one of them is negated, then by default the other position is validated.
  7. Therefore, part of the argument is that the atheist position cannot account for the existence of The Laws of Logic from its worldview.
  8. Therefore God exists.

Concepts are Dependent on and the Product of Physical Brains

Let’s begin with number 2, 3, and 4 from above:

The Laws of Logic are conceptual by nature — are not dependent on space, time, physical properties, or human nature.  They are not the product of the physical universe (space, time, matter) because if the physical universe were to disappear, The Laws of Logic would still be true.  The Laws of Logic are not the product of human minds because human minds are different — not absolute.

Now I’d like to first mention that Matt Dillahunty actually rejected the first part of Slick’s premise here, as Dillahunty explained that while logic (the concept, our application of it, etc.) may in fact be conceptual in nature, the logical absolutes themselves (i.e. the laws of logic) which logic is based on are in fact neither conceptual nor physical.  My understanding of what Dillahunty was getting at here is that he was basically saying that just as the concept of an apple points to or refers to something real (i.e. a real apple) which is not equivalent to the concept of an apple, so also does the concept of the logical absolutes refer to something that is not the same as the concept itself.  However, what it points to, Dillahunty asserted, is something that isn’t physical either.  Therefore, the logical absolutes themselves are neither physical nor conceptual (as a result, Dillahunty later labeled “the essence” of the LOL as transcendent).  When Dillahunty was pressed by Slick to answer the question, “then what caused the LOL to exist?”, Dillahunty responded by saying that nothing caused them (or we have no reason to believe so) because they are transcendent and are thus not a product of anything physical nor conceptual.

If this is truly the case, then Dillahunty’s point here does undermine the validity of the logical structure of Slick’s argument, because Slick would then be beginning his argument by referencing the content and the truth of the logical absolutes themselves, and then later on switching to the concept of the LOL (i.e. their being conceptual in their nature, etc.).  For the purposes of this post, I’m going to simply accept Slick’s dichotomy that the logical absolutes (i.e. the laws of logic) are in fact either physical or conceptual by nature and then I will attempt to refute the argument anyway.  This way, if “conceptual or physical” is actually a true dichotomy (i.e. if there are no other options), despite the fact that Slick hasn’t proven this to be the case, his argument will be undermined anyway.  If Dillahunty is correct and “conceptual or physical” isn’t a true dichotomy, then even if my refutation here fails, Slick’s argument will still be logically invalid based on the points Dillahunty raised.

I will say however that I don’t think I agree with the point that Dillahunty made that the LOL are neither physical nor conceptual, and for a few reasons (not least of all because I am a physicalist).  My reasons for this will become more clear throughout the rest of this post, but in a nutshell, I hold that concepts are ultimately based on and thus are a subset of the physical, and the LOL would be no exception to this.  Beyond the issue of concepts, I believe that the LOL are physical in their nature for a number of other reasons as well which I’ll get to in a moment.

So why does Slick think that the LOL can’t be dependent on space?  Slick mentions in the expanded form of his argument that:

They do not stop being true dependent on location. If we travel a million light years in a direction, The Laws of Logic are still true.

Sure, the LOL don’t depend on a specific location in space, but that doesn’t mean that they aren’t dependent on space in general.  I would actually argue that concepts are abstractions that are dependent on the brains that create them based on those brains having recognized properties of space, time, and matter/energy.  That is to say that any concept such as the number 3 or the concept of redness is in fact dependent on a brain having recognized, for example, a quantity of discrete objects (which when generalized leads to the concept of numbers) or having recognized the color red in various objects (which when generalized leads to the concept of red or redness).  Since a quantity of discrete objects or a color must be located in some kind of space — even if three points on a one dimensional line (in the case of the number 3), or a two-dimensional red-colored plane (in the case of redness), then we can see that these concepts are ultimately dependent on space and matter/energy (of some kind).  Even if we say that concepts such as the color red or the number 3 do not literally exist in actual space nor are made of actual matter, they do have to exist in a mental space as mental objects, just as our conception of an apple floating in empty space doesn’t actually lie in space nor is made of matter, it nevertheless exists as a mental/perceptual representation of real space and real matter/energy that has been experienced by interaction with the physical universe.

Slick also mentions in the expanded form of his argument that the LOL can’t be dependent on time because:

They do not stop being true dependent on time. If we travel a billion years in the future or past, The Laws of Logic are still true.

Once again, sure, the LOL do not depend on a specific time, but rather they are dependent on time in general, because minds depend on time in order to have any experience of said concepts at all.  So not only are concepts only able to be formed by a brain that has created abstractions from physically interacting with space, matter, and energy within time (so far as we know), but the mind/concept-generating brain itself is also made of actual matter/energy, lying in real space, and operating/functioning within time.  So concepts are in fact not only dependent on space, time, and matter/energy (so far as we know), but are in fact also the product of space, time, and matter/energy, since it is only certain configurations of such that in fact produce a brain and the mind that results from said brain.  Thus, if the LOL are conceptual, then they are ultimately the product of and dependent on the physical.

Can Truth Exist Without Brains and a Universe?  Can Identities Exist Without a Universe?  I Don’t Think So…

Since Slick himself even claims that The Laws of Logic (LOL) are conceptual by nature, then that would mean that they are in fact also dependent on and the product of the physical universe, and more specifically are dependent on and the product of the human mind (or natural minds in general which are produced by a physical brain).  Slick goes on to say that the LOL can’t be dependent on the physical universe (which contains the brains needed to think or produce those concepts) because “…if the physical universe were to disappear, The Laws of Logic would still be true.”  It seems to me that without a physical universe, there wouldn’t be any “somethings” with any identities at all and so the Law of Identity which is the root of the other LOL wouldn’t apply to anything because there wouldn’t be anything and thus no existing identities.  Therefore, to say that the LOL are true sans a physical universe would be meaningless because identities themselves wouldn’t exist without a physical universe.  One might argue that abstract identities would still exist (like numbers or properties), but abstractions are products of a mind and thus need a brain to exist (so far as we know).  If one argued that supernatural identities would still exist without a physical universe, this would be nothing more than an ad hoc metaphysical assertion about the existence of the supernatural which carries a large burden of proof that can’t be (or at least hasn’t been) met.  Beyond that, if at least one of the supernatural identities was claimed to be God, this would also be begging the question.  This leads me to believe that the LOL are in fact a property of the physical universe (and appear to be a necessary one at that).

And if truth is itself just another concept, it too is dependent on minds and by extension the physical brains that produce those minds (as mentioned earlier).  In fact, the LOL seem to be required for any rational thought at all (hence why they are often referred to as the Laws of Thought), including the determination of any truth value at all.  So our ability to establish the truth value of the LOL (or the truth of anything for that matter) is also contingent on our presupposing the LOL in the first place.  So if there were no minds to presuppose the very LOL that are needed to establish its truth value, then could one say that they would be true anyway?  Wouldn’t this be analogous to saying that 1 + 1 = 2 would still be true even if numbers and addition (constructs of the mind) didn’t exist?  I’m just not sure that truth can exist in the absence of any minds and any physical universe.  I think that just as physical laws are descriptions of how the universe changes over time, these Laws of Thought are descriptions that underlie what our rational thought is based on, and thus how we arrive at the concept of truth at all.  If rational thought ceases to exist in the absence of a physical universe (since there are no longer any brains/minds), then the descriptions that underlie that rational thought (as well as their truth value) also cease to exist.

Can Two Different Things Have Something Fundamental in Common?

Slick then erroneously claims that the LOL can’t be the product of human minds because human minds are different and thus aren’t absolute, apparently not realizing that even though human minds are different from one another in many ways, they also have a lot fundamentally in common, such as how they process information and how they form concepts about the reality they interact with generally.  Even though our minds differ from one another in a number of ways, we nevertheless only have evidence to support the claim that human brains produce concepts and process information in the same general way at the most fundamental neurological level.  For example, the evidence suggests that the concept of the color red is based on the neurological processing of a certain range of wavelengths of electromagnetic radiation that have been absorbed by the eye’s retinal cells at some point in the past.  However, in Slick’s defense, I’ll admit that it could be the case that what I experience as the color red may be what you would call the color blue, and this would in fact suggest that concepts that we think we mutually understand are actually understood or experienced differently in a way that we can’t currently verify (since I can’t get in your mind and compare it to my own experience, and vice versa).

Nevertheless, just because our minds may experience color differently from one another or just because we may differ slightly in terms of what range of shades/tints of color we’d like to label as red, this does not mean that our brains/minds (or natural minds in general) are not responsible for producing the concept of red, nor does it mean that we don’t all produce that concept in the same general way.  The number 3 is perhaps a better example of a concept that is actually shared by humans in an absolute sense, because it is a concept that isn’t dependent on specific qualia (like the color red is).  The concept of the number 3 has a universal meaning in the human mind since it is derived from the generalization of a quantity of three discrete objects (which is independent of how any three specific objects are experienced in terms of their respective qualia).

Human Brains Have an Absolute Fundamental Neurology Which Encompasses the LOL

So I see no reason to believe that human minds differ at all in their conception of the LOL, especially if this is the foundation for rational thought (and thus any coherent concept formed by our brains).  In fact, I also believe that the evidence within the neurosciences suggests that the way the brain recognizes different patterns and thus forms different/unique concepts and such is dependent on the fact that the brain uses a hardware configuration schema that encompasses the logical absolutes.  In a previous post, my contention was that:

Additionally, if the brain’s wiring has evolved in order to see dimensions of difference in the world (unique sensory/perceptual patterns that is, such as quantity, colors, sounds, tastes, smells, etc.), then it would make sense that the brain can give any particular pattern an identity by having a unique schema of hardware or unique use of said hardware to perceive such a pattern and distinguish it from other patterns.  After the brain does this, the patterns are then arguably organized by the logical absolutes.  For example, if the hardware scheme or process used to detect a particular pattern “A” exists and all other patterns we perceive have or are given their own unique hardware-based identity (i.e. “not-A” a.k.a. B, C, D, etc.), then the brain would effectively be wired such that pattern “A” = pattern “A” (law of identity), any other pattern which we can call “not-A” does not equal pattern “A” (law of non-contradiction), and any pattern must either be “A” or some other pattern even if brand new, which we can also call “not-A” (law of the excluded middle).  So by the brain giving a pattern a physical identity (i.e. a specific type of hardware configuration in our brain that when activated, represents a detection of one specific pattern), our brains effectively produce the logical absolutes by nature of the brain’s innate wiring strategy which it uses to distinguish one pattern from another.  So although it may be true that there can’t be any patterns stored in the brain until after learning begins (through sensory experience), the fact that the DNA-mediated brain wiring strategy inherently involves eventually giving a particular learned pattern a unique neurological hardware identity to distinguish it from other stored patterns, suggests that the logical absolutes themselves are an innate and implicit property of how the brain stores recognized patterns.

So I believe that our brain produces and distinguishes these different “object” identities by having a neurological scheme that represents each perceived identity (each object) with a unique set of neurons that function in a unique way and thus which have their own unique identity.  Therefore, it would seem that the absolute nature of the LOL can easily be explained by how the brain naturally encompasses them through its fundamental hardware schema.  In other words, my contention is that our brain uses this wiring schema because it is the only way that it can be wired to make any discriminations at all and validly distinguish one identity from another in perception and thought, and this ability to discriminate various aspects of reality would be evolutionarily naturally-selected for based on the brain accurately modeling properties of the universe (in this case different identities/objects/causal-interactions existing) as it interacts with that environment via our sensory organs.  Which would imply that the existence of discrete identities is a property of the physical universe, and the LOL would simply be a description of what identities are.  This would explain why we see the LOL as absolute and fundamental and presuppose them.  Our brains simply encompass them in the most fundamental aspect of our neurology as it is a fundamental physical property of the universe that our brains model.

I believe that this is one of the reasons that Dillahunty and others believe that the LOL are transcendent (neither physical nor conceptual), because natural brains/minds are neurologically incapable of imagining a world existing without them.  The problem then only occurs because Dillahunty is abstracting a hypothetical non-physical world or mode of existence, yet doesn’t realize that he is unable to remove every physical property from any abstracted world or imagined mode of existence.  In this case, the physical property that he is unable to remove from his hypothetical non-physical world is his own neurological foundation, the very foundation that underlies all concepts (including that of existential identities) and which underlies all rational thought.  I may be incorrect about Dillahunty’s position here, but this is what I’ve inferred anyway based on what I’ve heard him say while conversing with Slick about this topic.

Human (Natural) Minds Can’t Account for the LOL, But Disembodied Minds Can?

Slick even goes on to say in point 5 that:

But, since the Laws of Logic are always true everywhere and not dependent on human minds, it must be an absolute transcendent mind that is authoring them.  This mind is called God.

We can see here that he concedes that the LOL is in fact the product of a mind, only he rejects the possibility that it could be a human mind (and by implication any kind of natural mind).  Rather, he insists that it must be a transcendent mind of some kind, which he calls God.  The problem with this conclusion is that we have no evidence or argument that demonstrates that minds can exist without physical brains existing in physical space within time.  To assume so is simply to beg the question.  Thus, he is throwing in an ontological/metaphysical assumption of substance dualism as well as that of disembodied minds, not only claiming that there must exist some kind of supernatural substance, but that this mysterious “non-physical” substance also has the ability to constitute a mind, and somehow do so without any dependence on time (even though mental function and thinking is itself a temporal process).  He assumes all of this of course without providing any explanation of how this mind could work even in principle without being made of any kind of stuff, without being located in any kind of space, and without existing in any kind of time.  As I’ve mentioned elsewhere concerning the ad hoc concept of disembodied minds:

…the only concept of a mind that makes any sense at all is that which involves the properties of causality, time, change, space, and material, because minds result from particular physical processes involving a very complex configuration of physical materials.  That is, minds appear to be necessarily complex in terms of their physical structure (i.e. brains), and so trying to conceive of a mind that doesn’t have any physical parts at all, let alone a complex arrangement of said parts, is simply absurd (let alone a mind that can function without time, change, space, etc.).  At best, we are left with an ad hoc, unintelligible combination of properties without any underlying machinery or mechanism.

In summary, I believe Slick has made several errors in his reasoning, with the most egregious being his unfounded assumption that natural minds aren’t capable of producing an absolute concept such as the LOL simply because natural minds have differences between one another (not realizing that all minds have fundamental commonalities), and also his argument’s reliance on the assumption that an ad hoc disembodied mind not only exists (whatever that could possibly mean) but that this mind can somehow account for the LOL in a way that natural minds can not, which is nothing more than an argument from ignorance, a logical fallacy.  He also insists that the Laws of Logic would be true without any physical universe, not realizing that the truth value of the Laws of Logic can only be determined by presupposing the Laws of Logic in the first place, which is circular, thus showing that the truth value of the Laws of Logic can’t be used to prove that they are metaphysically transcendent in any way (even if they actually happen to be metaphysically transcendent).  Lastly, without a physical universe of any kind, I don’t see how identities themselves can exist, and identities seem to be required in order for the LOL to be meaningful at all.

Darwin’s Big Idea May Be The Biggest Yet

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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.