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...Maybe one day they'll have quantum entangled particles and they'll be able to do spooky things at a distance and communicate instantly? I don't pretend to understand the physics, but sounds like it would be interesting... if it could work. Perhaps then Radio Amateurs would become Amateur Tanglers?

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While it is spooky interaction at a distance it can't be used to transfer information faster than light. In simple terms, the states are correlated, but you have no way to influence what they are. You get a random number and know instantly what the other random number of the remote particle is, but that doesn't transfer any information from you to the remote location or vice-versa.

The most obvious explanation would have been that there is some kind of hidden state and they don't interact at all anymore, but that doesn't appear to be the case.

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