Combining Texts

Ideas for 'fragments/reports', 'The Problem of Knowledge' and 'Fact, Fiction and Forecast (4th ed)'

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3 ideas

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]

5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention

12394

If the result is bad, we change the rule; if we like the rule, we reject the result [Goodman]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

6023	Every proposition is either true or false [Chrysippus, by Cicero]