A man walks into a library, goes to the librarian, and says ..
Added 2023-04-17 04:02:34 +0000 UTCA man walks into a library, goes to the librarian, and says "I'm looking for a book called 'Pavlov's Dog and Schrödinger's Cat". The librarian says "That rings a bell, but I'm not sure if it's there or not".
