Re:How Bell’s Theorem proved ‘spooky action at a distance’ i...
by naasking on Tuesday July 20, 2021 @05:04PM
(#27899308)
> I'll never understand entanglement. Every explanation makes me wonder why it can't be used to instantaneously send a message.
Say you and Bob share a bunch of entangled particles. Bob wants to send you a message using those particles, so he takes one particle at a time and encodes his information. How would you know he did so? At the very least, Bob would still have to send you a classical signal to say he did something.
There are more subtle arguments why this doesn't work even at the particle level, but that at least should give you an idea why superluminal communication won't work.
Say you and Bob share a bunch of entangled particles. Bob wants to send you a message using those particles, so he takes one particle at a time and encodes his information. How would you know he did so? At the very least, Bob would still have to send you a classical signal to say he did something.
There are more subtle arguments why this doesn't work even at the particle level, but that at least should give you an idea why superluminal communication won't work.