Combining Texts
Ideas for
'(Nonsolipsistic) Conceptual Role Semantics', 'Truth by Convention' and 'Logic (Encyclopedia I)'
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11 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
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12595
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We have a theory of logic (implication and inconsistency), but not of inference or reasoning [Harman]
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5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism
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10064
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Quine quickly dismisses If-thenism [Quine, by Musgrave]
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5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention
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20296
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Logic needs general conventions, but that needs logic to apply them to individual cases [Quine, by Rey]
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8998
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Claims that logic and mathematics are conventional are either empty, uninteresting, or false [Quine]
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8999
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Logic isn't conventional, because logic is needed to infer logic from conventions [Quine]
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9000
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If a convention cannot be communicated until after its adoption, what is its role? [Quine]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
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21595
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Excluded middle is the maxim of definite understanding, but just produces contradictions [Hegel]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and
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12597
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I might accept P and Q as likely, but reject P-and-Q as unlikely [Harman]
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5. Theory of Logic / L. Paradox / 3. Antinomies
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15628
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The idea that contradiction is essential to rational understanding is a key modern idea [Hegel]
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15629
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Tenderness for the world solves the antinomies; contradiction is in our reason, not in the essence of the world [Hegel]
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15630
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Antinomies are not just in four objects, but in all objects, all representations, all objects and all ideas [Hegel]
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