23 ideas
18781 | Inconsistency doesn't prevent us reasoning about some system [Mares] |
18789 | Intuitionist logic looks best as natural deduction [Mares] |
18790 | Intuitionism as natural deduction has no rule for negation [Mares] |
18787 | Three-valued logic is useful for a theory of presupposition [Mares] |
18784 | In classical logic the connectives can be related elegantly, as in De Morgan's laws [Mares] |
18793 | Material implication (and classical logic) considers nothing but truth values for implications [Mares] |
18786 | Excluded middle standardly implies bivalence; attacks use non-contradiction, De M 3, or double negation [Mares] |
18780 | Standard disjunction and negation force us to accept the principle of bivalence [Mares] |
18782 | The connectives are studied either through model theory or through proof theory [Mares] |
18783 | Many-valued logics lack a natural deduction system [Mares] |
18792 | Situation semantics for logics: not possible worlds, but information in situations [Mares] |
18785 | Consistency is semantic, but non-contradiction is syntactic [Mares] |
18788 | For intuitionists there are not numbers and sets, but processes of counting and collecting [Mares] |
490 | Everything happens by reason and necessity [Leucippus] |
23551 | It is necessary for a belief that it be held for a length of time [Fricker,M] |
23558 | Offering knowledge needs accuracy and sincerity; receiving it needs testimonial justice [Fricker,M] |
23550 | Burge says we are normally a priori entitled to believe testimony [Fricker,M] |
23552 | We assess testimonial probabilities by the speaker, the listener, the facts, and the circumstances [Fricker,M] |
23553 | Testimonial judgement is not logical, but produces reasons and motivations [Fricker,M] |
23555 | Assessing credibility involves the impact of both the speaker's and the listener's social identity [Fricker,M] |
23554 | Judgements can be unreflective and non-inferential, yet rational, by being sensitive to experience [Fricker,M] |
18791 | In 'situation semantics' our main concepts are abstracted from situations [Mares] |
23557 | To judge agents in remote times and cultures we need a moral resentment weaker than blame [Fricker,M] |