Bell's theorem tells us NOT what quantum mechanics IS, but what quantum mechanics IS NOT
Abstract
Nonlocality, or quantumnonlocality, are buzzwords in the community of quantum foundation and information scientists, which purportedly describe the implications of Bell's theorem. When such phrases are treated seriously, that is it is claimed that Bell's theorem reveals nonlocality as an inherent trait of the quantum description of the microworld, this leads to logical contradictions, which will be discussed here. In fact, Bell's theorem, understood as violation of Bell inequalities by quantum predictions, is consistent with Bohr's notion of complementarity. Thus, if it points to anything, then it is rather the significance of the principle of Bohr, but even this is not a clear implication. Nonlocality is a necessary consequence of Bell's theorem only if we reject complementarity by adopting some form of realism, be it additional hidden variables, additional hidden causes, etc., or counterfactual definiteness. The essay contains two largely independent parts. The first one is addressed to any reader interested in the topic. The second, discussing the notion of local causality, is addressed to people working in the field.
 Publication:

arXiv eprints
 Pub Date:
 January 2015
 arXiv:
 arXiv:1501.05640
 Bibcode:
 2015arXiv150105640Z
 Keywords:

 Quantum Physics;
 Physics  History and Philosophy of Physics;
 Physics  Popular Physics
 EPrint:
 As essay, based on my talk at the conference "Quantum [Un]Speakables II: 50 Years of Bell's Theorem" (University of Vienna, June, 2014), submitted to the proceedings of the meeting