this post was submitted on 11 Dec 2023
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So at best it can be used for unpredictable coordination between vastly-spaced armies.
Nope. Because you don't know when it will collapse,. Imagine you have 2 balls, a red and a blue. They are both put in boxes and each ship takes 1 box. After you travel a long distance you open your box. You have just collapsed the "superposition" of what color the balls were. You now know what color both balls are, but you don't know if the other person has looked in their box yet.
I think a lot of people get confused by the term "observe" when talking about collapsing quantum uncertainty. Observing requires a photon to interact with the particle which is what caused it to "choose" what state it is in.