I don't know if I'd go that far. Certainly, structure IMPLIES function, but does not necessarily mean it's limited to that function. The human foot is obviously designed to walk, but can also be used to kick a football. We can learn to use different things for different purposes. And some parts of our body, such as the appendix, have outlived their original purpose, but can still function in a different manner. This applies to the brain as well. How else to explain stroke victims reprogramming themselves to utilize undamaged parts of their brains in order to at least partially regain abilities which were lost in the damaged portions.
Then how do you explain the carbon atom? It can be arranged into the hardest known material, diamond, yet is integral to organic molecules, which are generally far from hard. Even graphite, which is as pure a form of carbon as diamond, has a far different function.This applies from the smallest of mesurable objects to the largest.
And yet, different people, with arguably the same, or very similar, structures, will respond in markedly different ways.Much of what we think is completely free will is a reaction to electro-chemicals in your body structurally interacting with other structures in your brain as well, even "memories" have such coresponding structural patterns.
Again, this is a generalization, since parts of the brain can be retrained to perform functions for which they were not meant to perform.Its the structural hardware of the brain that determines the functions of the brain.
Again, this argues against structure being a strict controller of function. If that were true then we COULD all become grand masters.Not everyone can become a grand master in chess can they?
This is true. We are learning more and more about WHY we do things, and a lot of it is because we are predisposed to do them due to our genetic makeup. But predisposed does not necessarily mean required. Part of being human is the ability to recognize these traits and, hopefully, gain some kind of control over them. This is what makes one person risk his life to save someone while another person runs away.Science just happen to be proving that nature plays a larger role than the nurture crowd would like it too is all and its disturbing for some.