9 ideas
| 17423 | The essence of natural numbers must reflect all the functions they perform [Sicha] |
| 17425 | To know how many, you need a numerical quantifier, as well as equinumerosity [Sicha] |
| 17424 | Counting puts an initial segment of a serial ordering 1-1 with some other entities [Sicha] |
| 10496 | Monothetic categories have fixed defining features, and polythetic categories do not [Ellen] |
| 10497 | In symbolic classification, the categories are linked to rules [Ellen] |
| 10494 | Several words may label a category; one word can name several categories; some categories lack words [Ellen] |
| 10495 | Continuous experience sometimes needs imposition of boundaries to create categories [Ellen] |
| 3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
| 10498 | Classification is no longer held to be rooted in social institutions [Ellen] |