Combining Texts

All the ideas for 'Conditionals', 'Necessary Truth' and 'works'

expand these ideas     |    start again     |     specify just one area for these texts

6 ideas

9. Objects / B. Unity of Objects / 2. Substance / b. Need for substance
10710 We accept substance, to avoid infinite backwards chains of meaning [Wittgenstein, by Potter]
10. Modality / A. Necessity / 11. Denial of Necessity
4577 There is no necessity higher than natural necessity, and that is just regularity [Quine]
10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
13768 Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington]
10. Modality / B. Possibility / 8. Conditionals / b. Types of conditional
13770 There are many different conditional mental states, and different conditional speech acts [Edgington]
10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals
13764 Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington]
13765 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington]