I'll be slightly serious and expose my complete lack of knowledge of quantum mechanics: 1. how do we know that time isn't a completely subjective illusion of the human mind, simply a measuring device rather than a "thing", and 2. why does observing photons change how they would have reacted had they not been observed, unless it's in an actual thing that actually manipulates the photons and I'm misreading "observe" as "me looking at something" when it's actually "people looking at things in a special device that lets them look at them and which actually acts on them in some fashion."
EDIT: I think I might have answered my own question since the quantum eraser experiment involves shooting light through a crystal at least, right? Or photons or whatever.
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