5 ideas
6855 | Interesting philosophers hardly every give you explicitly valid arguments [Martin,M] |
6856 | Valid arguments can be rejected by challenging the premises or presuppositions [Martin,M] |
13166 | Essences are no use in mathematics, if all mathematical truths are necessary [Mancosu] |
6857 | An error theory of perception says our experience is not as it seems to be [Martin,M] |
5994 | Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG] |