Does that mean you believe there is something beyond the physical realm that gives free will? Otherwise, it seems to me like another physical process should be

Does that mean you believe there is something beyond the physical realm that gives free will? Otherwise, it seems to me like another physical process should be able to simulate a creature. There is still the general fact that plenty of processes are 'chaotic' making them impossible to accurately simulate (because errors in the initial state compound exponentially). But it seems to me like a good enough simulation of a chaotic system is phenemologically indistinguishable from the real thing.