Friday 2 December 2011

Free-Will, Neuroscience, Emergence And All That PR Jazz

What is it about free will that makes it such an attractive target? Perhaps because it's all we've got left now that God has gone. Just as there was a ton of publicity to be had attacking God and every last sentence in The Bible, so there's a lot of publicity to be had saying that we don't have free will or that we're so dumb and easily manipulated we don't deserve it.

Determinism - the thesis that everything but everything in the Universe was pre-destined to happen from the moment of creation because the development of the Universe is governed by the Laws of Nature and the disposition of the particles at the start - was really a PR stunt by Laplace Associates ("We Have No Need For That Hypothesis") for their Celestial Mechanics product. It's not a serious idea and was never intended to be. If you wonder how it was ever taken to be one, remember, you think that bottled water is better than the tap water in a first-world country. That was a PR stunt as well, and boy did it work.

Reductionist materialism - the thesis that everything you value is "merely" a bunch of atoms / whatevers, does not really exist ("Love ain't nothin' but oxytocin talkin'") and you're a fool for taking it so seriously - is just a playground wind-up. It's one thing to say that "emotions are caused by the release of hormones as a reaction to what happens to you" and another entirely to say "there are no emotions, merely hormones released into the blood stream". If there are no emotions, why go looking for hormones to explain them? To reduce X to Y is not to deny that X exists, but to claim that X is caused by Y and can be relieved by an antidote to Y. It's not necessary for me to convince you that your new girlfriend is trouble on stilts - all I need to do is to give you a dose of the anti-love hormone and you'll be free of your unhealthy fascination. Love may be hormonal, but that doesn't make any less all the things every poet in history ever said about it. Unless, that is, you're looking for a reason to be bitter and twisted.

The latest passengers on the Knocking Free Will bandwagon are the neuroscientists. But hold on here: when they publish research that seems to show that decisions are the result of brain processes, our reply should be... Gee, who knew? Followed by... and you'd publish it if you found that decisions weren't a result of brain processes? It's the business of neuroscience to find physical correlatives for what we think of as mental processes, so we should not really be too surprised when they say they have done so. Recently they have discovered that there's a brain process that accompanies a certain type of decision that happens before we become conscious of having made the decision. Lawyers are lining up to claim that their clients, criminals and bank CEO's all, are off the hook for anything they did. One way we know an idea is a bunch of crock is that defence lawyers rush to use it in defence of the clearly culpable.

We should be used to the idea that we are physical bodies and brains, with no magical ghosts, souls, minds or spirits interacting with our bodies (presumably via the pineal gland), and yet with free will. This is the twenty-first century, after all. It's sheer laziness to carry on proclaiming that we are but physical beings and therefore have no free will and our mental life is an irrelevant illusion. The real challenge is to explain how we can be wholly physical beings with free will,  making morally significant choices. From the fuss about the recent research on brain processes, it seems like a lot of people have yet to get the message.

I'm going to do is explain what I understand by freedom and free will. See if it makes sense to you. But don't expect me to argue against the determinists and Sneering Reductionists, and don't expect me to explain why free will isn't some massive illusion. All of these are self-consistent positions - sadly - and there's no way out once you step in. So pardon me if I trust my experience over an hypothesis that was only invented as a publicity stunt anyway.


What free will is not is this: that in the situation S there were options X and Y, and though we did X we could have done Y. This makes far, far too many fuzzy metaphysical claims for my taste. What does "could have done" mean? In practice? How does anyone know I could have done Y, especially since I'm a Catholic / Muslim / Vegetarian / Mother / Barrister and it's against my beliefs / ethics / religion and anyway I don't have that kind of money and have no idea where to buy arsenic? What does it mean to say that X and Y were options? For who? Me? Or a Russian oligarch? (Russian oligarchs have so many more options than I do.) Usually when someone says that I could have done Y, they are making a moral judgement, not saying something about the state of the Universe when I made the decision to do X.


There's an idea of free will that's just a little bit Romantic - in the way that Sleepless in Seattle is just a little bit romantic - and it goes like this: are we really free when we're the victims of manipulative advertisers, global brands, the indoctrination of schools and grade-inflated universities, peer pressure, employer's expectations and corporate rules, the censorship of the media conglomerates, the thousands of hoops of the bureaucrat, and the tricks played on us by marketeers informed by the latest research in behavioural psyschology? When artists have to have Masters' degrees and networking skills before they can even be considered by a gallery... are we really free? Or are we just choosing conformities?

You get the idea. Romantic free will must be pure or it is not. Free will is unconstrained, uninfluenced, and uncontamiated by the slightest taint of mundane reason, the unfettered expression of our inner souls, acting in a spirit of love, creativity, autonomy and originality. This isn't my idea of free will.

As a side issue, soul-lovers and mind-merchants will try to convince you that things like decisions and choices are "intentional objects" that cannot be understood in a purely material world, and need minds and other mysterious "emergent" objects. Emergence is a bridging idea - in this case between the rather simple way we thought about the world up to the end of the nineteenth century and how we are starting to think of it now. Back in the day, only the fundamental particles were real, and everything else was some temporary arrangement of them, with decreasing amounts of plausibility the more complex the arrangement became. Today we are starting to understand that it's the arrangements that are real, because the fundamental particles come and go. Your skin is real, but the cells are always falling off it. The Inland Revenue is sadly real, but the staff come and go on their temporary contracts. "Emergence" is offered as a magical process by which complicated things appear from seemingly simple components, as if bread dough "emerges" from its ingredients. It doesn't, of course, because it takes something to mix and knead the ingredients before the dough "emerges", even if in the case of the primordial DNA-creating soup, it wasn't an actual baker. Anyone who offers "emergence" as a serious explanation needs to learn more science and technology.

Free will is making decisions and choices, with an important condition, which I first read in Hegel's Aethestics. In the next post, I'll talk about that.

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