9 ideas
| 8983 | If 'red' is vague, then membership of the set of red things is vague, so there is no set of red things [Sainsbury] |
| 8986 | We should abandon classifying by pigeon-holes, and classify around paradigms [Sainsbury] |
| 8982 | Vague concepts are concepts without boundaries [Sainsbury] |
| 8984 | If concepts are vague, people avoid boundaries, can't spot them, and don't want them [Sainsbury] |
| 8985 | Boundaryless concepts tend to come in pairs, such as child/adult, hot/cold [Sainsbury] |
| 13550 | To be always happy is to lack knowledge of one half of nature [Seneca] |
| 13549 | Nothing bad can happen to a good man [Seneca] |
| 21994 | The handmill gives feudalism, the steam mill capitalism [Marx] |
| 13548 | The ocean changes in volume in proportion to the attraction of the moon [Seneca] |