Combining Texts

All the ideas for 'fragments/reports', 'Investigations into Logical Deduction' and 'Logic and Conversation'

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7 ideas

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13832

Natural deduction shows the heart of reasoning (and sequent calculus is just a tool) [Gentzen, by Hacking]

10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals

13856

Conditionals are truth-functional, but we must take care with misleading ones [Grice, by Edgington]

8948	The odd truth table for material conditionals is explained by conversational conventions [Grice, by Fisher]

13767

Conditionals might remain truth-functional, despite inappropriate conversational remarks [Edgington on Grice]

10. Modality / B. Possibility / 8. Conditionals / f. Pragmatics of conditionals

14277

A person can be justified in believing a proposition, though it is unreasonable to actually say it [Grice, by Edgington]

25. Social Practice / E. Policies / 5. Education / b. Education principles

13304

Learned men gain more in one day than others do in a lifetime [Posidonius]

27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure

20820

Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus]