The phrase, "predictions of quantum mechanics" Reading Anton Zeilinger's book, Dance of the Photons, I see the phrase, "the predictions of quantum mechanics". It is used in the sense that those predictions are confirmed in regard to a series of measurements of entangled particles. When I hear that, am I hearing that the outcomes of the measurements confirm that for entangled particles, the specific quantum state of entanglement was not determined until the quantum state of one of the entangled pair was measured? If so, then do "the predictions of QM" say that there is non-locality in nature, and therefore no hidden variables can produce the same results predicted by quantum mechanics? I apologize in advance for using the ID "hiddenvariable" which implies I have made a determination in favor of that interpretation :(. I am a simple layman trying to sort out QM, and don't claim to have enough understanding to take any informed position on the matter of interpretation.