21 ideas
8952 | We reach 'reflective equilibrium' when intuitions and theory completely align [Fisher] |
22664 | I do not care if my trivial beliefs are false, and I have no interest in many truths [Nozick] |
22665 | Maybe James was depicting the value of truth, and not its nature [Nozick] |
8943 | Three-valued logic says excluded middle and non-contradition are not tautologies [Fisher] |
8945 | Fuzzy logic has many truth values, ranging in fractions from 0 to 1 [Fisher] |
11022 | Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read] |
8951 | Classical logic is: excluded middle, non-contradiction, contradictions imply all, disjunctive syllogism [Fisher] |
8950 | Logic formalizes how we should reason, but it shouldn't determine whether we are realists [Fisher] |
11065 | The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna] |
11023 | The logical connectives are 'defined' by their introduction rules [Gentzen] |
11213 | Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen] |
10067 | Gentzen proved the consistency of arithmetic from assumptions beyond arithmetic [Gentzen, by Musgrave] |
8946 | We could make our intuitions about heaps precise with a million-valued logic [Fisher] |
8944 | Vagueness can involve components (like baldness), or not (like boredom) [Fisher] |
8941 | We can't explain 'possibility' in terms of 'possible' worlds [Fisher] |
8947 | If all truths are implied by a falsehood, then not-p might imply both q and not-q [Fisher] |
8949 | In relevance logic, conditionals help information to flow from antecedent to consequent [Fisher] |
22662 | In the instrumental view of rationality it only concerns means, and not ends [Nozick] |
22666 | Is it rational to believe a truth which leads to permanent misery? [Nozick] |
22667 | Rationality needs some self-consciousness, to also evaluate how we acquired our reasons [Nozick] |
22663 | Rationality is normally said to concern either giving reasons, or reliability [Nozick] |