20 ideas
8092 | Logic was merely a branch of rhetoric until the scientific 17th century [Devlin] |
23367 | Even pointing a finger should only be done for a reason [Epictetus] |
6253 | Reason is our power of finding out true propositions [Hutcheson] |
8081 | 'No councillors are bankers' and 'All bankers are athletes' implies 'Some athletes are not councillors' [Devlin] |
8085 | Modern propositional inference replaces Aristotle's 19 syllogisms with modus ponens [Devlin] |
8086 | Predicate logic retains the axioms of propositional logic [Devlin] |
8091 | Situation theory is logic that takes account of context [Devlin] |
8087 | Golden ages: 1900-1960 for pure logic, and 1950-1985 for applied logic [Devlin] |
8089 | Montague's intensional logic incorporated the notion of meaning [Devlin] |
8082 | Where a conditional is purely formal, an implication implies a link between premise and conclusion [Devlin] |
8072 | Sentences of apparent identical form can have different contextual meanings [Devlin] |
8075 | Space and time are atomic in the arrow, and divisible in the tortoise [Devlin] |
8088 | People still say the Hopi have no time concepts, despite Whorf's later denial [Devlin] |
8073 | How do we parse 'time flies like an arrow' and 'fruit flies like an apple'? [Devlin] |
8076 | The distinction between sentences and abstract propositions is crucial in logic [Devlin] |
6256 | Can't the moral sense make mistakes, as the other senses do? [Hutcheson] |
6252 | Happiness is a pleasant sensation, or continued state of such sensations [Hutcheson] |
6257 | You can't form moral rules without an end, which needs feelings and a moral sense [Hutcheson] |
6254 | We are asked to follow God's ends because he is our benefactor, but why must we do that? [Hutcheson] |
6255 | Why may God not have a superior moral sense very similar to ours? [Hutcheson] |