Comment by zargon

In my way of thinking, determinism is a prerequisite for "free will". People usually speak of free will as a the idea of making their own choices. Suppose you hypothetically take a snapshot of my exact physical/mental state at the instant of decision and replay it multiple times. If I always make the same choice, that's determinism. If the outcome of the decision is sometimes different, I can't call that a "choice" or free will. It was something random that I had no control over.