Combining Texts

Ideas for 'On the Philosophy of Logic', 'Introduction to Philosophical Papers I' and 'The Rise of Analytic Philosophy 1879-1930'

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5 ideas

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

8951	Classical logic is: excluded middle, non-contradiction, contradictions imply all, disjunctive syllogism [Fisher]

5. Theory of Logic / B. Logical Consequence / 3. Deductive Consequence |-

22279

Frege's sign |--- meant judgements, but the modern |- turnstile means inference, with intecedents [Potter]

5. Theory of Logic / C. Ontology of Logic / 2. Platonism in Logic

8950	Logic formalizes how we should reason, but it shouldn't determine whether we are realists [Fisher]

5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism

22291

Deductivism can't explain how the world supports unconditional conclusions [Potter]

5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth

22295

Modern logical truths are true under all interpretations of the non-logical words [Potter]