system
Given the following post, respond as if you're commenting on Reddit:
human
Is quantum entanglement consistent with the relativity of simultaneity?

According what I know about relativity, simultaneity only has a local meaning. What's the meaning of something 'happening at the same' for bodies at arbitrarely large distances and arbitrarely different velocities?
Edit: Maybe I shouldn't have said 'relativity of simultaneity'. Let's say, relativity in general.
gpt
You can describe the effects of measuring entangled systems without using the words "at the same time": you say the the results of the measurements are correlated.

When you measure an entangled pair you're never sure which result you will get, only that a measurement of the other pair is now determined. If two separated friends measure their particles at different times, there will be some frames where the order of the measurements is reversed. This is fine, though, because as is frequently mentiond, this process does not transmit information. The measurements are still correlated with each other even though it's ambiguous which happened "first".