|Rigidity, philosophy: Rigidity is an expression for the property of names to stand for the same object in all possible worlds, as opposed to descriptions that are not rigid and can change their reference. E.g. it is pointless to ask whether Napoleon might have been someone else but Napoleon in a possible world, but it is not meaningless to say that there is a possible world in which Napoleon is not the winner of Austerlitz. See also descriptions, names, possible worlds, range, necessity, possibility, reference, semantics of possible worlds, intensions, propositions._____________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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"Dthat" rigidity: is a rigid making operator: the object should thus be defined as the same in all possible worlds.
Rigidity/rigid/Evans: e.g. Julius/Zip/Evans/Stalnaker: the example can be interpreted in two ways: A) as an abbreviation of a complex singular term "dthat [the inventor of the zip]". Then "inventor of the zip" is part of the meaning. And it is a logical truth that he invented it. B) as a determination: that Julius is the name of the person.
Then it would be a semantic ((s) non-logical connection) between name and person. - Then the role of the description would be to set the reference. For example, someone hears the name: Case A) then he/she does not understand the utterance - then "dthat [the person to which Stalnaker referred to in the situation]" ad B) if the semantic properties of "Julius" are part of the historical causal chain, then the competent speaker does not need to know anything about it._____________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.
G. Evans/J. McDowell
Truth and Meaning Oxford 1977
The Varieties of Reference (Clarendon Paperbacks) Oxford 1989