QUANTUM MECHANICS

An inconsistent friend

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Are there limits to the applicability of textbook quantum theory? Experiments haven’t found any yet, but a new theoretical analysis shows that treating your colleagues as quantum systems might be a step too far.

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Fig. 1: A friend in superposition.

Change history

  • 12 October 2018

    In the version of this News & Views originally published, the link for ref. 7 was incorrectly given as https://arxiv.org/abs/1604.07422; it should have been https://scirate.com/arxiv/1604.07422. This has now been corrected.

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Correspondence to Matthew F. Pusey.

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