Where's the joke?
Schrodinger's Cat of SilenceA quantum physicist walks into a bar and orders a drink. As he's sipping his cocktail, he hears a voice say, 'Psst, you've got a great big mistake on your shirt.' He looks down and there's nothing on his shirt. He thinks, 'I must be in a superposition of being clean and dirty.'
A man walks into a library and asks the librarian, 'I'm looking for a book on quantum mechanics.' The librarian replies, 'Let me check.' She checks and says, 'It's on the shelf, but it's in a superposition of being on the shelf and not on the shelf at the same time.'
Entangled Obsession