9 ideas
12191 | Counterfactuals are true if logical or natural laws imply the consequence [Goodman, by McFetridge] |
5163 | Basic propositions refer to a single experience, are incorrigible, and conclusively verifiable [Ayer] |
5167 | The argument from analogy fails, so the best account of other minds is behaviouristic [Ayer] |
5164 | A statement is meaningful if observation statements can be deduced from it [Ayer] |
5165 | Directly verifiable statements must entail at least one new observation statement [Ayer] |
5166 | The principle of verification is not an empirical hypothesis, but a definition [Ayer] |
5162 | Sentences only express propositions if they are meaningful; otherwise they are 'statements' [Ayer] |
19216 | Propositions (such as 'that dog is barking') only exist if their items exist [Williamson] |
5168 | Moral approval and disapproval concerns classes of actions, rather than particular actions [Ayer] |