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BedrockFarmer t1_jb22lez wrote

Reply to comment by PercussiveRussel in Does the age of the universe depends on where you are? by _bidooflr_

This made sense to me, a non mathematician and non physicist. So basically the entangled particles will behave identically when observed. So there is no information linking the particles across spacetime.

So like if I had two cans and two six sided die and I “entangled” the die and closed the lid. I could then send one can to the moon and keep the other and when opened, both die will show the same result because of entanglement when normally there would be a 1/6 probability of what is observed for a single die.

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PercussiveRussel t1_jb25fro wrote

Bingo! This is effectively the same thing.

However, I have to be a bit pedantic here, in your example the dice might always have been "destined" to be the same, becauase a simple explanation could be that I glued the dice to the bottom of the can, both facing the number 3 up, and that you and a friend measure the same thing because the dice were always going to show 3. This is what we'd call a 'hidden variable theory' and is almost surely not how quantum probability works.

But yeah, entanglement simply means that knowing the outcome of 1 of the experiments gives you some sort of knowledge about the other experiment (like I said, this could be knowing the exact outcome of the other, or just give you better odds than pure luck for guessing the other experiment). The key concept is that you can't control the outcome of the experiments, you just improve your chances of guessing the other experiment correctly, which is exactly what happens in your dice example.

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