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Bell's Impossible Proof

David Albert

We carry a deep conviction that events in one place can only affect distant events through an unbroken chain of influence, like a row of dominoes falling one into the next. Physicists call this the principle of locality, and David Albert traces its remarkable history from Newton through the present day. Newton's theory of gravity seemed to violate locality with its mysterious action at a distance, but over three centuries, physicists found ways to restore it, first through Faraday and Maxwell's electromagnetic fields, which became real physical entities in their own right, and then through Einstein's general relativity, which finally made gravity local too. Just when it seemed the principle was secure, quantum mechanics shattered it. Albert walks through the Einstein-Podolsky-Rosen argument and Bell's theorem to show why quantum mechanics demands genuine non-locality, distant particles influencing each other with no chain of dominoes in between. The deepest intuition we have about how the world works turns out to be wrong.