8 ideas
16489 | Is it possible to state every possible truth about the whole course of nature without using 'not'? [Russell] |
18465 | An 'equivalence' relation is one which is reflexive, symmetric and transitive [Kunen] |
16490 | Some facts about experience feel like logical necessities [Russell] |
16488 | It is hard to explain how a sentence like 'it is not raining' can be found true by observation [Russell] |
16491 | If we define 'this is not blue' as disbelief in 'this is blue', we eliminate 'not' as an ingredient of facts [Russell] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
4786 | Russell's 'at-at' theory says motion is to be at the intervening points at the intervening instants [Russell, by Psillos] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |