[tsimionescu]

I'm not sure what this has to do with consciousness.

We can go into the details of what various interpretations of QM mean for determinism vs indeterminacy (e.g. MWI implies that there is fundamentally no randomness of any kind at the universal level, and everything is predetermined, but also every possible outcome will happen; Copenhagen implies a kind of epistemological randomness - the outcomes of measurements are random, and it's meaningless to talk about anything other than the outcomes of measurements; Pilot Wave theory implies that QM only has randomness in the sense that Newtonian mechanics already does - we can't measure the starting state well enough to say for sure what would happen, but the process is fundamentally deterministic and peredetermined).

However, there are only two possibilities: completely random (nothing can predict or influence which value the wavefunction will take after collapse) or fully determined (what you're eating for lunch today could be predicted by studying the initial state of the universe at the time of the Big Bang). There is currently no room for any other possibility in physics.

[eurasiantiger]

I feel most comfortable with the pilot wave approach in this regard; it is generally compatible with emergence-from-causality type theories.

Free will in the fundamental physics sense is most likely an illusion, probably one that confers mental hardiness in face of adversity out of one’s control.

However, it could be an emergent phenomenon and thus irreducible to individual quanta anyway: more than a sum of its parts. Fundamental interactions do demonstrably yield complex structures itself capable of higher order interactions.