4 ideas
18832 | Mathematical statements and entities that result from an infinite process must lack a truth-value [Dummett] |
19382 | Abstracta are abbreviated ways of talking; there are just substances, and truths about them [Leibniz] |
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] |