16 ideas
17824 | The master science is physical objects divided into sets [Maddy] |
17825 | Set theory (unlike the Peano postulates) can explain why multiplication is commutative [Maddy] |
17826 | Standardly, numbers are said to be sets, which is neat ontology and epistemology [Maddy] |
17828 | Numbers are properties of sets, just as lengths are properties of physical objects [Maddy] |
17827 | Sets exist where their elements are, but numbers are more like universals [Maddy] |
17830 | Number theory doesn't 'reduce' to set theory, because sets have number properties [Maddy] |
17823 | If mathematical objects exist, how can we know them, and which objects are they? [Maddy] |
17829 | Number words are unusual as adjectives; we don't say 'is five', and numbers always come first [Maddy] |
22384 | A 'double effect' is a foreseen but not desired side-effect, which may be forgivable [Foot] |
22385 | The doctrine of double effect can excuse an outcome because it wasn't directly intended [Foot] |
22386 | Double effect says foreseeing you will kill someone is not the same as intending it [Foot] |
22387 | Without double effect, bad men can make us do evil by threatening something worse [Foot] |
22388 | Double effect seems to rely on a distinction between what we do and what we allow [Foot] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
22383 | Abortion is puzzling because we do and don't want the unborn child to have rights [Foot] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |