24 ideas
8092 | Logic was merely a branch of rhetoric until the scientific 17th century [Devlin] |
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] |
7306 | If the only property of a name was its reference, we couldn't explain bearerless names [Miller,A] |
8075 | Space and time are atomic in the arrow, and divisible in the tortoise [Devlin] |
7322 | Constitutive scepticism is about facts, and epistemological scepticism about our ability to know them [Miller,A] |
8088 | People still say the Hopi have no time concepts, despite Whorf's later denial [Devlin] |
7325 | Dispositions say what we will do, not what we ought to do, so can't explain normativity [Miller,A] |
7324 | Explain meaning by propositional attitudes, or vice versa, or together? [Miller,A] |
8073 | How do we parse 'time flies like an arrow' and 'fruit flies like an apple'? [Devlin] |
7323 | If truth is deflationary, sentence truth-conditions just need good declarative syntax [Miller,A] |
8076 | The distinction between sentences and abstract propositions is crucial in logic [Devlin] |
7315 | 'Jones is a married bachelor' does not have the logical form of a contradiction [Miller,A] |
7328 | The principle of charity is holistic, saying we must hold most of someone's system of beliefs to be true [Miller,A] |
7329 | Maybe we should interpret speakers as intelligible, rather than speaking truth [Miller,A] |
7333 | The Frege-Geach problem is that I can discuss the wrongness of murder without disapproval [Miller,A] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |