Godwin's law

Godwin's Law (also known as Godwin's Rule of Nazi Analogies)^[1] is an adage formulated by Mike Godwin in 1990. The law states: "As a Usenet discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one."^[2][3] References to Godwin's Law often actually refer to a corollary of it which determines that the person who first makes an unwarranted reference to Nazi Germany or Hitler in an argument loses that argument automatically.