The boundary between mind and matter could be tested using a new twist on a well-known experiment in quantum physics.

Over the past two decades, a type of experiment known as a Bell test has confirmed the weirdness of quantum mechanics – specifically the “spooky action at a distance” that so bothered Einstein.

Now, a theorist proposes a Bell test experiment using something unprecedented: human consciousness. If such an experiment showed deviations from quantum mechanics, it could provide the first hints that our minds are potentially immaterial.

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