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    Home/Original/inverse
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    Inverse View

    It is not the case that Empirical tests of whether Nature is contextual seem possible

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    2 perspectives
    Reason for 1 of 2
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    • 1.Any empirical test of contextuality presupposes that measurement contexts are sharply defined, but apparatus settings are always imprecisely realized in practice.
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    • 2.The finite-precision loophole (Meyer, Kent, Clifton 1999) shows that any KS-uncolourable set can be approximated by a colourable set within experimental error.
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    • 3.Therefore no finite-precision experiment can distinguish genuine contextuality from a noncontextual hidden variable theory that exploits measurement imprecision.
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    Reason for 2 of 2
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    • 1.Operational tests of contextuality require sequential or joint measurements whose order and compatibility conditions alter the physical system being probed.
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    • 2.Disturbance introduced by earlier measurements in a sequence can mimic contextual statistics without any underlying ontological contextuality, as Bohr himself emphasized regarding measurement interference.
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    • 3.Experimental correlations attributed to contextuality are thus systematically underdetermined between genuine KS-contextuality and classical measurement disturbance.
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    Reasons Against

    1 perspective
    Reason against
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    • 1.A subset of a suitable KS-uncolourable set could be measured
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    • 2.Cases can be produced where QM and noncontextual HV theories make measurably different predictions
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