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Examples Hofstadter points to Bach's Canon per Tonos, M. C. Escher's drawings Waterfall, Drawing Hands, Ascending and Descending, the liar paradox and the proof of Gödel's Incompleteness Theorem as examples of strange loops. Strange loops often involve violation of hierarchies, in which, for example, a computer program (rather than a person) writes computer programs. This, by itself, is not enough to be a strange loop (it is common practice for a compiler). An example of a strange loop in software is a quine, which is a program that produces a new version of itself without any input from the outside. Metamorphic code is similar. Strange loops are frequently intriguing or even humorous. A sketch on Late Night with Conan O'Brien once had Conan (seemingly spontaneously) become upset with a cue-card holder and tell him to leave the set; immediately, the cue-card holder was shown, holding a card with Conan's "you'd better leave" line written on it. See also | ||||||||||
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