An apparently Sound argument leading to a contradiction. Some famouS exampleS are RuSSell' S paradox and the {liar paradox}. MoSt paradoxeSStem from Some kind of Self-reference. {Smarandache LinguiStic Paradox (http://www.gallup.unm.edu/~Smarandache/Paradox.htm)}. (1999-11-05)