No-hiding theorem

No-hiding theorem is like a rule that says that everyone has to show their things, even if they want to keep them hidden. Imagine playing hide and seek. No-hiding theorem says that you can't hide in a place where nobody can find you, even if you try to be sneaky. Everyone has to come out of the hiding spot at some point so that everyone can see them. It's like a game of hide and seek where everyone has to be found eventually.