First, there is no system that is wholly non-deterministic. Most systems are deterministic. But even if there were non-deterministic systems, why must consciousness, free will, and non-determinism all be wrapped together?

And suppose our “consciousness” makes choices. Then we’ve just shifted the process from something we understand somewhat (physical phenomena – the brain, etc.) to something we don’t understand at all (consciousness). And then we must ask, what causes our consciousness to make the choices it does? Either our consciousness follows rules (determinism) or it chooses randomly (non-determinism). We can define free will to mean “to choose at random”, but how is that free?

Free will is an illusion. Non-determinism is an interpretation of observable, repeatable experimentation (although I have trouble accepting this interpretation). Consciousness is a mystery.