So, I can honestly say that I have absolutely no knowledge on the subject. I DO however agree with the view iguess is expressing. I mean, if I'm actually understanding it correctly that is. Okay, so the particles that make us up follow specific "rules" or "constants." Meaning that just like the boiling temperature of water will always be what it is no matter where in the Universe it is, our particles have similar constants. Okay, since a person is made up of particles, this includes the brain, then a person's every thought is a result of the way particles interact with each other. Each person's individual "mind" is a result of the complex, yet predictable(if we knew everything there is to know about each and every particle in the universe)interplay of particles. If so, our "choices" are governed by thoughts that are themselves governed by our physical biology, and thus not choices at all. Is that about right, iguess?
That is one, quite simple, way to look at it.
Problem is, it all boils down to the subatomic level, and scientists haven't been able to figure out what actually goes on there. At the level in which we live and work, everything is the direct consequence of everything that came before it, but, at a quantum level, it may not be so.