Philosophy Dictionary of ArgumentsHome
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| 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)._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. | |||
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P. Geach on Presuppositions - Dictionary of Arguments
I 82f Presupposition/(Law of the) Excluded Middle/Geach: alleged counter-example against the sentence of the excluded middle: For example, from something that is not an animal, one might assume that it is neither true nor false that it is hungry. So the predicate "animal" is presupposed. >Cf. >Counterfactual conditional. Geach: presupposition is quite different from entailment: if "hungry" entails "animal" then: "non-animal" entails "not-hungry". - Problem: from a thing "not animal" would at the same time be hungry/non-hungry. >Entailment/Geach. Def hungry/terminology/Geach: true of all that is hungry. Def not-hungry/terminology/Geach: true of everything of which "not-hungry" is true and "animal" is not true. ((s) So no object since they cannot be "not-hungry".) Geach: this eliminates categorical differences of "hungry" and "animal". >Categories, >Categorization. >Terminology/Geach._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition. |
Gea I P.T. Geach Logic Matters Oxford 1972 |
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> Counter arguments against Geach
> Counter arguments in relation to Presuppositions
Ed. Martin Schulz, access date 2024-04-18