5 ideas
11074 | 'It is true that this follows' means simply: this follows [Wittgenstein] |
10801 | Either reference really matters, or we don't need to replace it with substitutions [Quine] |
11073 | Two and one making three has the necessity of logical inference [Wittgenstein] |
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] |