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Single Idea 8072

[filed under theme 5. Theory of Logic / E. Structures of Logic / 1. Logical Form ]

Full Idea

"Safety goggles must be worn in the building" is clear enough, but "dogs must always be carried on the escalator" doesn't require us to head off in search of a dog.

Gist of Idea

Sentences of apparent identical form can have different contextual meanings

Source

Keith Devlin (Goodbye Descartes [1997], Ch. 1)

Book Ref

Devlin,Keith: 'Goodbye Descartes: the end of logic' [Wiley 1997], p.7


A Reaction

A nice illustration of how the requirements of logical form will often take us beyond the strict and literal meaning of a sentence, into context, tone, allusion and subjective aspects.


The 36 ideas with the same theme [structure of a sentence relevant to its logical role]:

Aristotle places terms at opposite ends, joined by a quantified copula [Aristotle, by Sommers]
For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
Stoics avoided universals by paraphrasing 'Man is...' as 'If something is a man, then it is...' [Stoic school, by Long]
'Man is a rational mortal animal' is equivalent to 'if something is a man, that thing is a rational mortal animal' [Sext.Empiricus]
Frege replaced Aristotle's subject/predicate form with function/argument form [Frege, by Weiner]
A thought can be split in many ways, so that different parts appear as subject or predicate [Frege]
Convert "Jupiter has four moons" into "the number of Jupiter's moons is four" [Frege]
Vagueness, and simples being beyond experience, are obstacles to a logical language [Russell]
Leibniz bases everything on subject/predicate and substance/property propositions [Russell]
'Elizabeth = Queen of England' is really a predication, not an identity-statement [Russell, by Lycan]
In a logically perfect language, there will be just one word for every simple object [Russell]
Romulus does not occur in the proposition 'Romulus did not exist' [Russell]
A statement's logical form derives entirely from its constituents [Wittgenstein]
Wittgenstein says we want the grammar of problems, not their first-order logical structure [Wittgenstein, by Horsten/Pettigrew]
Apparent logical form may not be real logical form [Wittgenstein]
Reduction to logical forms first simplifies idioms and grammar, then finds a single reading of it [Quine]
There are no rules for the exact logic of ordinary language, because that doesn't exist [Strawson,P]
Translating into quantificational idiom offers no clues as to how ordinary thinkers reason [Sommers]
There is a huge range of sentences of which we do not know the logical form [Davidson]
Logical form is the part of a sentence structure which involves logical elements [Harman]
A theory of truth in a language must involve a theory of logical form [Harman]
Our underlying predicates represent words in the language, not universal concepts [Harman]
We regiment to get semantic structure, for evaluating arguments, and understanding complexities [Stalnaker]
We now have a much more sophisticated understanding of logical form in language [Burge]
Logical form is the aspects of meaning that determine logical entailments [Horwich]
Thoughts have a dual aspect: as they seem to introspection, and their underlying logical reality [McGinn]
Sentences of apparent identical form can have different contextual meanings [Devlin]
Is it the sentence-token or the sentence-type that has a logical form? [Fine,K]
Finding the logical form of a sentence is difficult, and there are no criteria of correctness [Shapiro]
'Propositional functions' are propositions with a variable as subject or predicate [Maddy]
Logical Form explains differing logical behaviour of similar sentences [Swoyer]
Logical form can't dictate metaphysics, as it may propose an undesirable property [Schaffer,J]
In proof-theory, logical form is shown by the logical constants [Rossberg]
Logical formalization makes concepts precise, and also shows their interrelation [Horsten/Pettigrew]
Propositions can be analysed as pairs of terms glued together by predication [Engelbretsen]
Logical syntax is actually close to surface linguistic form [Engelbretsen]