No it isn't. At the very least, it may be distinguishable for clarity, but clearly they are joined at the hip. If you accept that the biophysical system is det

No it isn't. At the very least, it may be distinguishable for clarity, but clearly they are joined at the hip. If you accept that the biophysical system is deterministic, then the subjective experience is a deterministic, objective physical occurrence. That is unless you're proposing that there is a another system which mediates between them the distinction doesn't really exist. This 'interceptor' system must non-deterministic and outside the boundaries of the biochemical system that itself mediates free will and changes the outcome of the physical system itself. That's what Penrose says. He says there's some kind of quantum stuff happening on another level we don't understand that's changing your brain chemistry in some near-purposive manner because he can't reconcile the physics with how he feels about what his brain does. This is despite the fact that we understand the brain chemistry and aren't confused about how it works. The likelier answer is that he just doesn't like the fact that his world class "self-directed thinking" is just the neural perception of patterns he didn't put into motion.