Did Bohr Understand EPR?

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Bacciagaluppi, Guido
preprint description
In 1935, Einstein, Podolsky and Rosen (EPR) famously published a paper arguing for the incompleteness of quantum mechanics, using the example of two spatially separated but entangled particles. In his almost equally famous reply, Niels Bohr argued against EPR by providing a careful analysis of quantum measurements from the point of view of complementarity. Perhaps oddly, this analysis focuses on the example of a *single* particle passing through a slit. In this paper I argue that the disanalogy between the two examples is only apparent, and does not constitute an obstacle in trying to understand Bohr's views on complementarity.