[fwdpropaganda]

No, all theories of (local) hidden variables have been experimentally ruled out.

https://en.wikipedia.org/wiki/Bell%27s_theorem

> Bell's theorem states that any physical theory that incorporates local realism cannot reproduce all the predictions of quantum mechanical theory. Because numerous experiments agree with the predictions of quantum mechanical theory, and show differences between correlations that could not be explained by local hidden variables, the experimental results have been taken by many as refuting the concept of local realism as an explanation of the physical phenomena under test. For a hidden variable theory, if Bell's conditions are correct, the results that agree with quantum mechanical theory appear to indicate superluminal effects, in contradiction to the principle of locality.

[eridius]

Interesting. But it sounds like non-local hidden variables are still possible. My assumption is that non-local hidden variables is non-falsifiable, which is why I said this was a philosophical question.

[cgmg]

Non-local hidden variables have not been ruled out, as evinced by the de Broglie–Bohm theory.