Why does determinism preclude free will? If I am the physical processes that occur in my brain, then my decisions are rooted in those processes. Even if those processes are deterministic and there was only ever one outcome for my decisions, I can still say that I have free will because it was the very unfolding of those deterministic processes which led me to me to expressing my free will. There is only a clash between free will and determinism when you imagine that your consciousness is in some vague sense separate from the physical world.