Q: I asked a librarian if she had a book about Pavlov’s dog and Schrodinger’s cat
A:
She said it rang a bell, but she wasn’t sure if it was there or not
from Tiki Humor www.tikiwebgroup.com/32021/i-asked-a-librarian-if-she-had-a-book-about-pavlovs-dog-and-schrodingers-cat/