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Godwin's law - Wikipedia
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:[2][3]
"As a Usenet discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one."
Godwin's Law is often cited in online discussions as a deterrent against the use of arguments in the reductio ad Hitlerum form.
The rule does not make any statement about whether any particular reference or comparison to Hitler or the Nazis might be appropriate, but only asserts that one arising is increasingly probable. It is precisely because such a comparison or reference may sometimes be appropriate, Godwin has argued[4] that overuse of Nazi and Hitler comparisons should be avoided, because it robs the valid comparisons of their impact. Although in one of its early forms Godwin's Law referred specifically to Usenet newsgroup discussions,[5] the law is now applied to any threaded online discussion: electronic mailing lists, message boards, chat rooms, and more recently blog comment threads and wiki talk pages.
There are many corollaries to Godwin's law, some considered more canonical (by being adopted by Godwin himself)[2] than others invented later.[1] For example,
there is a tradition in many newsgroups and other Internet discussion forums that once such a comparison is made, the thread is finished and whoever mentioned the Nazis has automatically "lost" whatever debate was in progress. This principle itself is frequently referred to as Godwin's Law. It is considered poor form to raise such a comparison arbitrarily with the motive of ending the thread. There is a widely recognized codicil that any such ulterior-motive invocation of Godwin's law will be unsuccessful (this is sometimes referred to as "Quirk's Exception").[6]
Godwin's Law applies especially to inappropriate, inordinate, or hyperbolic comparisons of other situations (or one's opponent) with Hitler or Nazis or their actions.
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