What does quantum mechanics say about the existence of free will?

Quantum mechanics is often thought of as inherently probabilistic — but some physicists see the theory differently. In fact, some argue that quantum mechanics is even more deterministic than its classical predecessor.

Chen believes that under strong determinism, it no longer makes sense to speak of counterfactuals. “You can understand the counterfactuals as referring to different physical possibilities compatible to the laws of physics,” Chen says. “But if I tell you there’s only one single possibility, then there are no counterfactuals. All counterfactuals become meaningless or trivial or vacuous.”

Read the full article at Scientific American.