20 ideas
22701 | Jokes can sometimes be funny because they are offensive [Jacobson,D] |
13838 | A decent modern definition should always imply a semantics [Hacking] |
13834 | Gentzen's Cut Rule (or transitivity of deduction) is 'If A |- B and B |- C, then A |- C' [Hacking] |
13835 | Only Cut reduces complexity, so logic is constructive without it, and it can be dispensed with [Hacking] |
13833 | 'Thinning' ('dilution') is the key difference between deduction (which allows it) and induction [Hacking] |
13845 | The various logics are abstractions made from terms like 'if...then' in English [Hacking] |
13840 | First-order logic is the strongest complete compact theory with Löwenheim-Skolem [Hacking] |
13844 | A limitation of first-order logic is that it cannot handle branching quantifiers [Hacking] |
13842 | Second-order completeness seems to need intensional entities and possible worlds [Hacking] |
13837 | With a pure notion of truth and consequence, the meanings of connectives are fixed syntactically [Hacking] |
13839 | Perhaps variables could be dispensed with, by arrows joining places in the scope of quantifiers [Hacking] |
13843 | If it is a logic, the Löwenheim-Skolem theorem holds for it [Hacking] |
22703 | We don't often respond to events in art as if they were real events [Jacobson,D] |
22702 | Audiences can be too moral [Jacobson,D] |
22696 | 'Autonomism' says the morality is irrelevant to the aesthetics [Jacobson,D] |
22697 | Moral defects of art can be among its aesthetic virtues [Jacobson,D] |
22700 | Immoral art encourages immoral emotions [Jacobson,D] |
22699 | Moderate moralism says moral qualities can sometimes also be aesthetic qualities [Jacobson,D] |
22698 | We can judge art ethically, or rate its ethical influence, or assess its quality via its ethics [Jacobson,D] |
20713 | God must be fit for worship, but worship abandons morally autonomy, but there is no God [Rachels, by Davies,B] |