16 ideas
16951 | It was realised that possible worlds covered all modal logics, if they had a structure [Dummett] |
16952 | If something is only possible relative to another possibility, the possibility relation is not transitive [Dummett] |
16953 | Relative possibility one way may be impossible coming back, so it isn't symmetrical [Dummett] |
16960 | If possibilitiy is relative, that might make accessibility non-transitive, and T the correct system [Dummett] |
16958 | In S4 the actual world has a special place [Dummett] |
14217 | The 'standard' view of relations is that they hold of several objects in a given order [Fine,K] |
14216 | The 'positionalist' view of relations says the number of places is fixed, but not the order [Fine,K] |
14218 | A block on top of another contains one relation, not both 'on top of' and 'beneath' [Fine,K] |
14219 | Language imposes a direction on a road which is not really part of the road [Fine,K] |
14220 | Explain biased relations as orderings of the unbiased, or the unbiased as permutation classes of the biased? [Fine,K] |
16957 | Possible worlds aren't how the world might be, but how a world might be, given some possibility [Dummett] |
16959 | If possible worlds have no structure (S5) they are equal, and it is hard to deny them reality [Dummett] |
16956 | To explain generosity in a person, you must understand a generous action [Dummett] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
16954 | Generalised talk of 'natural kinds' is unfortunate, as they vary too much [Dummett] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |