## Philosophy Lexicon of Arguments | |||

Presuppositions: are silent assumptions, which are contained in utterances. These assumptions are suggested by the context or conventions. E.g. "All my children sleep" presupposes that I have children. (See A. von Stechow, "Schritte zur Satzsemantik", ww.sfs.uni-tuebingen.de/~astechow/Aufsaetze/Schritte.pdf (26.06.2006) p. 80). | |||

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Meg I 303 Presupposition/RyninVsStrawson: ...then it follows, paradoxically, that all of the prerequisite allegations were true: it should apply: S > S and S ~> S", but it is also true that S v ~ S. It follows that: S" - in other words,. (~ S"> ~ (S v ~ S))> S - HungerlandVsStrawson: his presupposition is not a context-implication - it implies in addition that I believe to have children - VsStrawson: normal communication does not go like that. --- Meggle I 300 Presupposition/Strawson: Definition "S presupposes S': The truth of S' is a necessary condition of the truth or falsity of the assertion that S. E.g. "All my children sleep tight" presupposes "I have children". --- I 303 David RyninVsStrawson: paradoxically from this interpretation follows that all presupposed assertions would be true: S > S' and ~ S > S'; but also this applies: S v ~ S. From this follows: S'. In other words: (~S' (S v ~ S))> S is analytically true in a system of bivalent propositional logic. |
Grice: > Meg I G. Meggle (Hg) Handlung, Kommunikation, Bedeutung Frankfurt/M 1979 |

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Ed. Martin Schulz, access date 2017-05-27