system
Given the following post, respond as if you're commenting on Reddit:
human
Are the effects of quantum entanglement instantaneous or are limited by the speed of light?

If two photons are entangled and are separated by a light-year, would it take a year for one photon to show the changes made to the other?
gpt
Two entangled particles do not influence each other. They are just correlated in a weird way, that is different from classical correlation, but acting on one half of an entangled pair will never affect the other in an observable way.