Perhaps someday we can predict human thought but that isnt reality right now. But theoretically it could be possible unless there is a physical process in our brains that we yet do not understand.In theory (excluding quantum uncertainty which effects rocks and water as much as brain matter), all human decisions are predictable if you know all the conditions.
The brain doesn't have an "ability" to think and more than the rock has an "ability" to make waves, those thoughts you mention are just neural electronic impulses that are caused by other physical phenomenon, that inlcudes "raionionalizing" and "picking possibilities," all of those are thoughts that are actually just collections of neural impulses that are 100% deterministic.
The Brain doesn't "choose" any more than a computer "chooses," since that is what the brian is, an organic computer.
The animal doesn't HAVE a brain, it IS a brain, unless you want to posit some immaterial soul, otherwise what IS the animal? But whatever that brian does is 100% physically caused, the "animal" (whatever that is) is enslaved to physical law and causation.
You're mistaken in saying that what we do is caused by our brain as opposed to being dictated by events without and control, because our brain is dictated by events outside of its control, infact you can't talk about the brain having "control" any more than saying the computer has control, or a calculater, or a rock.
Your mistake is in saying that we can choose multiple choices, because whatever the brain does, in the end, is caused, physically, the "choice" is an illusion, the "control" is an illusion.
When a computer has an aparent choice between various options, it might appear that way, but in reality what it does is causally determined, and the brain, is just an organic computer.
I made it clear that the concept free will is a illusion. I did not move the concept of free will to the words "I" "choose" "choice" "control" like you are implying. Either way I did not use those words in the manner that you seem to think I did..
What I said was that the brain has multiple causation choices that the brain can choose from. That doesnt mean that the choices/decisions were magically devoid of causation. And I never implied nor said that those choices/decisions were void of causation. But the brain is definitely (so far at least) very different than a computer. No not magically different just different in the aspect that the brain isnt at all working like a computer, which is take away the brain and a computer does nothing on its own. Yes a program can run itself but it took a human to start the process. Take the human brain out of the equation and a computer would not exist much less know what to do. Try it walk away from your computer and wait for it to do something that a human did not program it to do. Even autonomous programs were programmed to do something.
No of course you will say that a human inputting commands is no different than causation inputting commands for a human brain. Then you will say that the computers program has choices in performing a task which is true in certain programs. And I admit a similarity of circumstances. But the main difference is of biological function vs mechanical function. A calculator must follow a finite mathematical equation in all of its functions the same with a computer. Even what they call abstract computing is bound by the laws of physics, of course so is our brain and the thoughts that our brains produce. Because of the way the brain wires itself through the learning process our brain are all wired differently. And since our brains also encounter different experiences, the unique wiring and experiences create a unique identity. That unique identity uses personal thoughts to guides its perception of the world. Its that perception that causes me to make different decisions that you might in any given situation. Again its still causation in a unbroken chain of events.
And perhaps theoretically in the future a technological device could do everything that a biological brain can do, but for now it cannot.
So the best that you could rationally claim is that someday it might be possible that a computer can behave the same way as a biological brain. But there is no certainty in that assumption. A human brain is indeed a marvelous thing but it is not magical and must abide by the laws of physics which is what I asserted. The "choice" isnt a illusion it is a perception of reality and its constraints. "I" choose to do something but that choice was never magical and outside of the laws of physics, it was just me be a part of causation, not being causation. That is to say that I didnt cause anything that wasnt caused by a previous event. The choices were all there I didnt invent any of them I just guided my body to one of the determined routes that I had no part in creating. I was aware that I made a choice but did not create the choice or technically the outcome. Though I can answer a question yes or no and the outcome of my answer can unleash the next set of caused events which would not have been unleashed had I not been there. You entire lifes causation may lead you up to a situation that will take your life away but a different choice at a crucial point could have meant you will not die that day. Choices are real and that is why moral responsibility is still intact. Either way causation is causing something to happen no matter what choice you make and there still wasnt any free will involved. But it was caused not dictated since we have brains to think about causes and effects before hand. The brain bases a prediction of actions by previous experiences and adjust its reaction accordingly or not. The outcome could have gone a different way depending on the chemical reactions happening in the brain. Those chemical reactions are physical a chain link is causation.