Once upon a time , there are a priest, a lawyer, and a physicist all face the guillotine. The priest is up for the chopping block first, and they ask him, “Do you have any last words?” Yes, says the priest, “Please, God, by your holy spirit, set me free.” They put him under the guillotine and, lo and behold, the blade stops just before it reaches is neck. “God has spoken!” says the magistrate, and they set the priest free. Next up is the lawyer, and he’s asked if he has any last words. “Yes,” he says, “the spirit of justice will set me free!” They let the blade fall, and it stops just short of his neck. “The spirit of justice has spoken!” cries the magistrate, and they set the lawyer free. Last up is the physicist. He’s asked for his last words. “I know little about God,” says the physicist, “and even less about justice. But I do know one thing. If you look up, you’ll see that the rope is stuck on the pulley. If you set it free, that blade should come down real good.” So, they did that, and indeed, the guillotine worked just fine for the physicist. The moral of the story? Physicists should learn when to keep their mouths shut.