The Dana Foundation, a private philanthropic foundation interested in brain science, is sponsoring a debate called "Seeking Free Will in Our Brains", pitting a neurologist against a psychiatrist.
It's probably not surprising that the neurologist, Mark Hallett, allies with the side of the debate that claims the human feeling of free will is an illusion of some sort. He presents the standard view that since the 'mind is what the brain does', and since the brain is a physical organ, then there is no such thing as free will - or that at least the feeling of free will is an illusion, albeit a powerful one.
The psychiatrist, Paul R. McHugh, on the other hand, questions whether or not he (or anyone) should be carrying the burden of proof when they claim that they have free will. He says:
First: the project seemed rhetorically backward. Should I be carrying the burden of proof here? The conscious mind and all the mental experiences tied to freedom of the will—choosing, deciding, hoping, deliberating, fearing, and cooperating with others—seem as self-evident as the five senses. No one asks us to prove them “real,” especially before hearing evidence that would claim they are not.
I have a significant amount of sympathy for people who are still tied to the idea of free will, especially since it seems so counter-intuitive to deny it. But there have been many things in the history of human thought that have been counter-intuitive yet have been shown to be undoubtedly true: the earth is indeed not flat, nor does the sun revolve around the earth; the appearance of design in the biological world can be accomplished by the natural process of evolution; we don't actually 'see' colors or 'hear' sounds, but our brains translate wavelengths of light and vibrations of air into color and sound, respectively.
McHugh goes on to differentiate between two types of patients with whom he typically works - those whose mental difficulties arise from what he calls 'material' causes such as Alzheimer's, Huntington's, and schizophrenia; and those who apparently aren't as organically compromised, one might say, such as anorexics, addicts and what he calls the 'demoralized.' He claims that these patients can provide 'reasons' for their mental distress, and although he claims he's not denying that the brain is involved, he claims they are (presumably moral) agents "responding to the distressing differences between what they want and what life delivers", and that they do, in fact, possess freedom of the will - it's just misused:
Come see these patients where choices are the problem and where they defend their choices with arguments that frustrate their recovery. Freedom they have in abundance; it’s wisdom they lack.
Additionally, he cautions against an overly optimistic view of the ability of science to solve all mysteries to our collective satisfaction:
Certain philosophers and some of their neuroscience students reject this naturalistic defense of freedom by noting that it rests on descriptions of mental experiences. But, say they, brain material produces all mental phenomena, including consciousness and its expressions. These psychological “effects” emerge from the complex, mechanistic, causal apparatus that is the brain. Therefore, like all “effects” in nature, they must be lawfully determined by their “causes.” What people do—and believe they choose to do—is inexorably determined by brain conditions present and past. A new predestination is born, as all psychological freedom, sensed or supposed, is illusionary.
On hearing this argument (and some form of it is far from original or even contemporary, given that Spinoza argued in similar ways), I’m struck by how it is built on presumptions rather than on a body of fact or neuroscientific discovery. Its champions presume that eventually, given the steady progress that they anticipate, neuroscientists will know all about the brain and see how mental productions are like all other productions of the body. This argument dismisses as simply a matter of the moment our present vast ignorance of just how the brain relates to mental phenomena.
It is undoubtedly true that we do not have a mature science of consciousness, or even a mature science of the brain in general; but we have made great strides in the last two decades, and this fuels much of the optimism. But the argument, and the presumptions about which he speaks, (particularly the reference to Spinoza), does not have to be new or a posteriori to be legitimate or carry force. If the quote from Spinoza to which he refers is that "men think themselves free because they are conscious of their volitions and desires, but are ignorant of the causes by which they are led to wish and desire," it seems undoubtedly true. Or, as Nietzsche put it:
The desire for “freedom of the will” in the superlative metaphysical sense, which still holds sway...the desire to bear the entire and ultimate responsibility for one’s actions oneself, and to absolve God, the world, ancestors, chance, and society involves nothing less than to be precisely this causa sui and, with more than Baron Münchhausen’s audacity, to pull oneself up into existence by the hair, out of the swamps of nothingness.
Despite the typical Nietzschean flamboyance and hyperbole, he makes a good point; i.e., true freedom of the will would involve something that is apparently impossible - to be the cause of oneself in the most essential way. One can understand this sitting in one's armchair, as they say, so one needn't perform experiments or take observations to do so. It can be considered a priori as opposed to a posteriori.
McHugh goes on to compare the difference between what we know about how the kidney produces urine to how the brain produces conscious mental life: it's not just that we lack the facts of the matter, but that we seem to lack any conception about how the brain produces consciousness.
I think he draws an important distinction here. There are many theorists today working on the 'hard problem' of consciousness: how can purely physical processes of the brain give rise to subjective experiences? Why does there have to be subjective experiences at all? He correctly says that while we may have correlations between the physiology of neurons and brain systems and certain conscious experiences (what researchers in the field call the Neural Correlates of Consciousness), we have not been able to show that certain activity in certain areas of the brain are the conscious parts, you might say. We have not been able to find a consciousness module or a set of consciousness neurons. But from this McHugh then concludes that any such hope that we will amounts to 'fantasy,' and that investigators into this type of phenomenon "work happily away within the idiom of their successes, while ignoring issues that may demand reasoning with new idioms carrying new implications."
First of all, if a scientist threw up her arms and said that it's all fantasy, her PhD wouldn't be worth the paper it's printed on. That's not science. When science faces a seemingly intractable problem, the solution isn't to quit but to say "I don't know" for the moment and keep working on the problem, thinking up new hypotheses to be tested, revising and tweaking old hypotheses, or simply waiting until new and advanced technology provides additional leverage for working on the problem. In Sue Blackmore's eminently readable book, Consciousness: A Very Short Introduction, she writes:
The confusion [regarding the 'hard problem' of consciousness] we have reached is deep and serious, and I suspect it reveals fundamental flaws in the way we normally think about consciousness. Perhaps we need to throw out the most basic assumptions and start all over again.
I want to quote McHugh's final remarks on the matter, and then address the points he makes in them.
I look for the time when neuroscientists will turn to explain how the material world can evoke these wonderful characteristics of human beings and will abandon any thought of them as illusionary.
Freedom is an expression of reasoning by subjects who realize that their choices determine what they make of themselves and are ready to accept the responsibility for what they fashion. To think otherwise is to give oneself over to predestination.
Ultimately in a choice between freedom and predestination, I’m for freedom and the proposition it entails—that we’re responsible for making the world what it is. Indeed, this proposition organizes and justifies the therapies that psychiatrists direct.
In regard to the nature of the term 'illusion' - according to the Dictionary on my Macbook here, an illusion is "a thing that is or is likely to be wrongly perceived or interpreted by the senses." So we needn't worry about using the term 'illusion' when describing free will, because it doesn't mean that the phenomenon of free will doesn't exist, just that it isn't what we think it is.
I agree with him that freedom is the expression of reasoning and deliberation by subjects who are aware that their decisions determine (to some extent) who they are, and that they feel a sense of responsibility for their decisions and choices. In saying this, he comes close to the position philosophers call 'compatibilism': free will is possible in a deterministic world, but they define 'free' very specifically. To a compatibilist, free will is the recognition that human beings are complex subjects who deliberate and act in the world, and that to be free is to perform actions voluntarily based on one's own reasons. You are free of constraints, coercion, and psychological compulsion to do what you desire to do. But as Spinoza (and others) said, we are not free to determine what we desire - we are ignorant of the causes which led us to desire thus, and therefore are not free to decide what we desire.
I don't wish to denigrate the practice of psychiatry or psychotherapy; I think that they are valid ways to alter unwanted behavior. However, if the mental distress one is feeling is a result of something that can best be 'cured' by pharmaceutical intervention, then it would be advisable to use it. And I know there is some intermingling of psychotherapy and drug therapy, especially in regard to mood disorders such as depression.
But even though behavior is fully caused - fully determined - that doesn't mean that behavior can't be changed. Certain types of psychotherapy, or even life events in general, can alter our behavior, sometimes in significant ways. Our best science tells us that our genes have produced a brain that is flexible and sensitive to the environment, which includes both human and non-human interaction. So I don't believe that the justification for McHugh's profession is lost if we are fully caused, natural animals - human animals. Indeed, in some respects his profession is more justified because we are animals whose behavior can be modified by such methods.
Finally, I would like to note that just because we cannot yet fully explain something such as consciousness or free will, it doesn't mean that therefore the idea that we do have free will is the default position. It just means we have more work to do.
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free will, determinism, naturalism, The Dana Foundation, Mark Hallett, Paul R. McHugh