Where the laws of classical physics don't, because why bother, really? We're talking about a realm where particles can exist in multiple places at once, because why not?
It's like that time you were in two places at once during happy hour, but instead of just being tipsy, you're also a wave function.
But don't worry, it's not just about being drunk in two places; it's about the fundamental nature of reality.
Or, you know, it's just a bunch of nonsense, and the universe is actually just a big ol' ball of cheese.
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