“You can observe a lot by just watching.” -Yogi Berra
Sure, the quantum Universe is a little bit spooky. Things that we’re used to being “determined” here in the macroscopic world, like where a particle will end up if you throw it, aren’t so simple if we head on down to subatomic scales.
While you might have often heard that things are only determined by observation, does that have anything to do with you, the observer? Or is that just an anthropomorphized way of talking about what particles do?
Let’s take a look at Young’s experiment and Bell’s theorem and find out what a quantum observation really is!