13941
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Are the truth-bearers sentences, utterances, ideas, beliefs, judgements, propositions or statements? [Cartwright,R]
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Full Idea:
What is it that is susceptible of truth or falsity? The answers suggested constitute a bewildering variety: sentences, utterances, ideas, beliefs, judgments, propositions, statements.
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From:
Richard Cartwright (Propositions [1962], 01)
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A reaction:
Carwright's answer is 'statements', which seem to be the same as propositions.
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9390
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Logic guides thinking, but it isn't a substitute for it [Rumfitt]
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Full Idea:
Logic is part of a normative theory of thinking, not a substitute for thinking.
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From:
Ian Rumfitt (The Logic of Boundaryless Concepts [2007], p.13)
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A reaction:
There is some sort of logicians' dream, going back to Leibniz, of a reasoning engine, which accepts propositions and outputs inferences. I agree with this idea. People who excel at logic are often, it seems to me, modest at philosophy.
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9389
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Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt]
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Full Idea:
Vagueness in respect of membership is consistency with determinacy of the set's identity, so long as a set's identity is taken to consist, not in its having such-and-such members, but in its being the extension of a concept.
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From:
Ian Rumfitt (The Logic of Boundaryless Concepts [2007], p.5)
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A reaction:
I find this view of sets much more appealing than the one that identifies a set with its members. The empty set is less of a problem, as well as non-existents. Logicians prefer the extensional view because it is tidy.
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13944
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We can pull apart assertion from utterance, and the action, the event and the subject-matter for each [Cartwright,R]
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Full Idea:
We need to distinguish 1) what is asserted, 2) that assertion, 3) asserting something, 4) what is predicated, 5) what is uttered, 6) that utterance, 7) uttering something, 8) the utterance token, and 9) the meaning.
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From:
Richard Cartwright (Propositions [1962], 05-06)
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A reaction:
[summary of his overall analysis in the paper] It is amazingly hard to offer a critical assessment of this sort of analysis, but it gives you a foot in the door for thinking about the issues with increasing clarity.
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13947
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'It's raining' makes a different assertion on different occasions, but its meaning remains the same [Cartwright,R]
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Full Idea:
A person who utters 'It's raining' one day does not normally make the same statement as one who utters it the next. But these variations are not accompanied by corresponding changes of meaning. The words 'It's raining' retain the same meaning throughout.
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From:
Richard Cartwright (Propositions [1962], 10)
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A reaction:
This is important, because it shows that a proposition is not just the mental shadow behind a sentence, or a mental shadow awaiting a sentence. Unlike a sentence, a proposition can (and possibly must) include its own context. Very interesting!
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13946
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To assert that p, it is neither necessary nor sufficient to utter some particular words [Cartwright,R]
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Full Idea:
In order to assert that p it is not necessary to utter exactly those words. ...Clearly, also, in order to assert that p, it is not sufficient to utter the words that were actually uttered.
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From:
Richard Cartwright (Propositions [1962], 07)
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A reaction:
I take the first point to be completely obvious (you can assert one thing with various wordings), and the second seems right after a little thought (the words could be vague, ambiguous, inaccurate, contextual)
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13951
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Assertions, unlike sentence meanings, can be accurate, probable, exaggerated, false.... [Cartwright,R]
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Full Idea:
Whereas what is asserted can be said to be accurate, exaggerated, unfounded, overdrawn, probable, improbable, plausible, true, or false, none of these can be said of the meaning of a sentence.
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From:
Richard Cartwright (Propositions [1962], 12)
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A reaction:
That fairly firmly kicks into touch the idea that the assertion is the same as the meaning of the sentence.
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