4 ideas
21963 | It is possible that an omnipotent God might make one and two fail to equal three [Descartes] |
12191 | Counterfactuals are true if logical or natural laws imply the consequence [Goodman, by McFetridge] |
2614 | Modern phenomenalism holds that objects are logical constructions out of sense-data [Ayer] |
2615 | The concept of sense-data allows us to discuss appearances without worrying about reality [Ayer] |