I take your point, IC. But you must be careful here not to jump to conclusions. Anatomy is very complex. For a long time it was thought that pain was attributed to too much blood in the system, therefore unfortunate patients underwent excrutiating blood-letting episodes, often resulting in their death. Because we do not understand how something works yet doesn't mean we can attribute it to something immaterial or transcendent. Surely we have a responsibility to try and understand it before we jump off the cliff? If, throughout history, it had been otherwise, then you and I would be living in a very different world. Aristotle thought the universe was composed of five elements (one of which was ether or the divine substance until modern chemistry thankfully proved otherwise). Now if we were living in Aristotle's time, without the aid of modern scientific equipment such as electron microscopes etc. I would wager that you and I both would have taken the Aristotlean line. Yes, we are only coming to grasps with consciousness but it is important not to simply dismiss it and something divine given that the whole history of human endeavour and science has been one of throwing off the shackles of misunderstanding about the world.To make the point, let's try a thought experiment. Materialists insist the brain is composed of nothing but "materials": in specific, we might say something like, it's made up of amino acid molecules. Well okay -- can one amino acid molecule have "consciousness"? Obviously not. Can two? Obviously not. How about three? No. What if the three were arranged in a triangle? No, there's no reason to think that would make a difference. Four, arranged in a square? No....
I think it is important here not to get confused about what "pure material" actually means. It is too simplistic to suggest that materials equals molecules. Force, for example, cannot be explained in terms of molecules. As the recent Nobel winning physicists recently uncovered, the nature of mass is fundamentally different to how we perceive it. The Higgs Boson is not "material" in the common understanding of the term, but rather a field of force. The forces of gravity (though not fully understood yet), electromagnetism, nuclear force are radically different to "material". Yet I doubt even hardened anti-materialists offer a theist rationale for such things.The issue is that pure materials, no matter how much of them there is, or no matter what the nature of the physical arrangement is, do not account for the existence of consciousness.
Once again, I must reiterate my amateurishness on this topic. I am not in the least bit qualified to come down heaviliy one side. I do wrestle with the notion of reconciling responsibility with determinism. Free will seems to be more agreeable in this sense. But perhaps even the term "free will" is not properly understood. What does "will" really mean. Are we confusing it with choice?
But IC, are you not in one sense a Compatibilist also? I mean, yes obviously believe in free will - but you must also allow that there is a degree of determinism intrinsic in nature. I mean, the central thesis of science is determinism, and you have stated before that science itself is a powerful (yet limited) tool. Newtonian mechanics is the most powerful statement of determinism. You throw a ball into the air at a certain angle, with a certain speed, and if you know the external forces acting on that ball, i.e. gravity, air resistance, then you cannot accurately determine that ball's trajectory, height, final speed and distnace travelled. This is determinism which you agree with perhaps unbeknownst to yourself. Okay, quantum mechanics deviates from this on a microscopic level, but for the macro, the laws of nature hold true. So you may not agree with determinism in terms of defining human behaviour, but there is a level in which you agree with it. Therefore are you not a Compatibilist?Then, as Compatibilism inevitably does, you tack on the directly contradictory claim that somehow "free will" applies to "certain aspects," though you cannot really justify that addendum.