[Open Mind]

'.... The "freedom" of this choice is NOT determined to be an "illusion" by the quantum laws in the way that it is determined to be an illusion by the laws of classical theory. The two theoretical situations are fundamentally different in this respect! According to classical physics, the choice on the part of the experimenter about what he or she will do---about how he or she will act---is in principle fixed by the "known" (although now known to be false) physical laws, and we have causal closure of the physical. But this feature, Closure of Physical (CoP), does not carry over to quantum theory. Orthodox quantum theory, as it was created by the founders and was extended and rigorized by von Neumann, and as it is actually used and understood and empirically tested, DOES NOT ENTAIL CAUSAL CLOSURE OF THE PHYSICAL, EVEN MODULO STATISTICAL FACTORS. According to the orthodox principles there are interventions that are not controlled by any known laws, and thus CAN be, and in actual practice are treated as, determined by our conscious thoughts, feelings, and reasons.

This feature of quantum theory really should been brought out in this session, particularly because the philosophers and neuroscientists on the panel seemed not to appreciate that there is, with regard to this issue of the causal closure of the physical, a fundamental difference in principle between the causal psycho-physical structure of quantum mechanics and those intuitions and concepts that are in concordance with the notion of causal closure of physical illustrated by classical mechanics.....'

Physicist Henry Stapp
http://sts.lbl.gov/~stapp/Townes.txt