14 ideas
14352 | '¬', '&', and 'v' are truth functions: the truth of the compound is fixed by the truth of the components [Jackson] |
14360 | Possible worlds for subjunctives (and dispositions), and no-truth for indicatives? [Jackson] |
14353 | Modus ponens requires that A→B is F when A is T and B is F [Jackson] |
14354 | When A and B have the same truth value, A→B is true, because A→A is a logical truth [Jackson] |
14355 | (A&B)→A is a logical truth, even if antecedent false and consequent true, so it is T if A is F and B is T [Jackson] |
14358 | In the possible worlds account of conditionals, modus ponens and modus tollens are validated [Jackson] |
14359 | Only assertions have truth-values, and conditionals are not proper assertions [Jackson] |
14357 | Possible worlds account, unlike A⊃B, says nothing about when A is false [Jackson] |
14356 | We can't insist that A is relevant to B, as conditionals can express lack of relevance [Jackson] |
1590 | The just man does not harm his enemies, but benefits everyone [Plato] |
19896 | It is not a law if not endorsed by the public [Hooker,R] |
19891 | Rule of law is superior to autonomy, because citizens can see what is expected [Hooker,R] |
19897 | Human laws must accord with the general laws of Nature [Hooker,R] |
17005 | Natural things observe certain laws, and things cannot do otherwise if they retain their forms [Hooker,R] |