4 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
10245 | One geometry cannot be more true than another [Poincaré] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
10650 | In the military, persons are parts of parts of large units, but not parts of those large units [Rescher] |