16 ideas
19066 | Philosophy aims to understand the world, through ordinary experience and science [Dummett] |
4037 | Ockham's Razor is the principle that we need reasons to believe in entities [Mellor/Oliver] |
19067 | A successful proof requires recognition of truth at every step [Dummett] |
19060 | Truth-tables are dubious in some cases, and may be a bad way to explain connective meaning [Dummett] |
11066 | Deduction is justified by the semantics of its metalanguage [Dummett, by Hanna] |
19058 | Syntactic consequence is positive, for validity; semantic version is negative, with counterexamples [Dummett] |
19063 | Beth trees show semantics for intuitionistic logic, in terms of how truth has been established [Dummett] |
19059 | In standard views you could replace 'true' and 'false' with mere 0 and 1 [Dummett] |
19062 | Classical two-valued semantics implies that meaning is grasped through truth-conditions [Dummett] |
19065 | Soundness and completeness proofs test the theory of meaning, rather than the logic theory [Dummett] |
4027 | Properties are respects in which particular objects may be alike or differ [Mellor/Oliver] |
4029 | Nominalists ask why we should postulate properties at all [Mellor/Oliver] |
19061 | An explanation is often a deduction, but that may well beg the question [Dummett] |
20363 | Leaves are unequal, but we form the concept 'leaf' by discarding their individual differences [Nietzsche] |
4039 | Abstractions lack causes, effects and spatio-temporal locations [Mellor/Oliver] |
19064 | Holism is not a theory of meaning; it is the denial that a theory of meaning is possible [Dummett] |