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13768 | Validity can preserve certainty in mathematics, but conditionals about contingents are another matter |

13770 | There are many different conditional mental states, and different conditional speech acts |

13765 | 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens |

13764 | Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? |