11 ideas
6402 | In 1927, Russell analysed force and matter in terms of events [Russell, by Grayling] |
10496 | Monothetic categories have fixed defining features, and polythetic categories do not [Ellen] |
10497 | In symbolic classification, the categories are linked to rules [Ellen] |
10495 | Continuous experience sometimes needs imposition of boundaries to create categories [Ellen] |
14732 | A perceived physical object is events grouped around a centre [Russell] |
14733 | An object produces the same percepts with or without a substance, so that is irrelevant to science [Russell] |
6418 | Russell rejected phenomenalism because it couldn't account for causal relations [Russell, by Grayling] |
10498 | Classification is no longer held to be rooted in social institutions [Ellen] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
21706 | At first matter is basic and known by sense-data; later Russell says matter is constructed [Russell, by Linsky,B] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |