Godwin's law (or Godwin's rule of Hitler analogies) is an Internet adage asserting that "As an online discussion grows longer, the probability of a comparison involving Hitler approaches"; that is, if an online discussion (regardless of topic or scope) goes on long enough, sooner or later someone will compare someone or something to Adolf Hitler or his deeds. Promulgated by the American attorney and author Mike Godwin in 1990, Godwin's law originally referred specifically to Usenet newsgroup discussions. It is now applied to any threaded online discussion, such as Internet forums, chat rooms, and comment threads, as well as to speeches, articles, and other rhetoric where reductio ad Hitlerum occurs.

There are many corollaries to Godwin's law, some considered more canonical (by being adopted by Godwin himself) than others. For example, there is a tradition in many newsgroups and other Internet discussion forums that, when a Hitler comparison is made, the thread is finished and whoever made the comparison loses whatever debate is in progress. This principle is itself frequently referred to as Godwin's law.

It would seem many people have not heard of Godwin's law in relation to discussion .

Basically if you invoke Hitler or the Nazis you are considered to have lost the arguement .

It would seem many people have not heard of Godwin's law in relation to discussion .

Basically if you invoke Hitler or the Nazis you are considered to have lost the arguement .

It's also a tradition that the first poster to notice such a post announces that Godwin's Law has been invoked and the therefore the person who wrote the post has lost all credibility.