Godwin's Law

Godwin's Law began as a humorous observation about online discussions, by Mike Godwin, who later became general counsel of the Electronic Frontier Foundation. The original formulation was:

As a Usenet discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one.

As it has evolved, it has spread to all online discussion, not just Usenet, and has become a guideline that when participants in discussion invoke Nazi analogies, all useful information exchange has ended.

He has clarified that genuine historical references to National Socialism, in context, do not invoke the Law. It has been observed, however, that improper invocations of Godwin's Law also indicate the conversation has lost value.