Einstein's missed opportunity to rid us of 'spooky actions at a distance'

Re:Einstein's missed opportunity to rid us of 'spooky action... by GoblinSlayer on Tuesday October 13, 2020 @11:53AM (#24766761)

Entanglement works like synchronized clocks. You can't send information, but you can coordinate actions to a similar effect. Much like you can coordinate actions of separate groups using synchronized clocks with no communication except for passing time.

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Re:Einstein's missed opportunity to rid us of 'spooky action... by tabtab on Tuesday October 13, 2020 @01:50PM (#24767920)

That's the "hidden local variables" theory. Experiments seem to suggest it's wrong. How one pair is observed appears to affect (change) the other instantaneously. But, not in a way we can use to our advantage to get instant communication.

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Re:Einstein's missed opportunity to rid us of 'spooky action... by GoblinSlayer on Wednesday October 14, 2020 @02:33AM (#24773743)

Exact mechanism is different from synchronized clocks, it's an illustration how you can have correlation without communication and how you can use it in practice, an this correlation works with both entanglement and synchronized clocks.

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Re:Einstein's missed opportunity to rid us of 'spooky action... by tabtab on Wednesday October 14, 2020 @03:48PM (#24780738)

It seems some aspects can be explained by (modelled as) synchronization, but not all. "Spooky action at a distance" resembling faster-than-light communication still exists.

The two top explanations are either some info can travel faster than light (from our perspective), or the universe forks into copies when needed.

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