Philosophy Lexicon of Arguments

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Necessity, philosophy: different kinds of necessity are distinguished, differing in their strength. For example, physical, logical or metaphysical necessity. See also necessity de dicto, necessity de re.

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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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III 67
Necessity: the classical criterion of logical concluding does not mention necessity!
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III 140
Necessity a posteriori (empirical): Kripke: believes in the necessity of the origin - Margret Thatcher could not have been Stalin's daughter - naturally the KGB could reveal a gigantic conspiracy that the baby had been foisted at the time - but this is an epistemic possibility - metaphysical, there is no possibility.
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III
Necessary/a priori/Kripke/Read: the separation between the necessary and the apriori: surprising consequence: every statement a priori is equivalent to a contingent statement - distinction with rigid designator for truth value: not "the truth value of A" but "the actual truth value of A"- truth is not a property.


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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.
Logic Texts
Me I Albert Menne Folgerichtig Denken Darmstadt 1988
HH II Hoyningen-Huene Formale Logik, Stuttgart 1998
Re III Stephen Read Philosophie der Logik Hamburg 1997
Sal IV Wesley C. Salmon Logik Stuttgart 1983
Sai V R.M.Sainsbury Paradoxien Stuttgart 2001


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Ed. Martin Schulz, access date 2017-10-19