When I talk about entanglement, there's a feature that says if you know the particles are entangled so their spins are oppositely aligned, then we say when you measure one and it's spin up, you instantly know the other one is spin down. In the case of electrons entangled in an atom, maybe their spins are also entangled in such a way, but we're ignoring that for right now. We're just talking about the necessary entanglement because they are identical particles. You don't learn anything about the other electron by measuring one. All you do is that you learn that the otherOne is the other place. But because of this observational implication, you can very well treat