6 ideas
9879 | NF has no models, but just blocks the comprehension axiom, to avoid contradictions [Quine, by Dummett] |
14361 | Lewis says indicative conditionals are truth-functional [Lewis, by Jackson] |
8434 | In good counterfactuals the consequent holds in world like ours except that the antecedent is true [Lewis, by Horwich] |
2614 | Modern phenomenalism holds that objects are logical constructions out of sense-data [Ayer] |
2615 | The concept of sense-data allows us to discuss appearances without worrying about reality [Ayer] |
9419 | A law of nature is a general axiom of the deductive system that is best for simplicity and strength [Lewis] |