15 ideas
| 13913 | The four 'perfect syllogisms' are called Barbara, Celarent, Darii and Ferio [Engelbretsen/Sayward] |
| 13914 | Syllogistic logic has one rule: what is affirmed/denied of wholes is affirmed/denied of their parts [Engelbretsen/Sayward] |
| 13915 | Syllogistic can't handle sentences with singular terms, or relational terms, or compound sentences [Engelbretsen/Sayward] |
| 13916 | Term logic uses expression letters and brackets, and '-' for negative terms, and '+' for compound terms [Engelbretsen/Sayward] |
| 13850 | In modern logic all formal validity can be characterised syntactically [Engelbretsen/Sayward] |
| 13849 | Classical logic rests on truth and models, where constructivist logic rests on defence and refutation [Engelbretsen/Sayward] |
| 13851 | Unlike most other signs, = cannot be eliminated [Engelbretsen/Sayward] |
| 13852 | Axioms are ω-incomplete if the instances are all derivable, but the universal quantification isn't [Engelbretsen/Sayward] |
| 8845 | An experience's having propositional content doesn't make it a belief [Pryor] |
| 8842 | The best argument for immediate justification is not the Regress Argument, but considering examples [Pryor] |
| 8843 | Impure coherentists accept that perceptions can justify, unlike pure coherentists [Pryor] |
| 8844 | Coherentism rests on the claim that justifications must be beliefs, with propositional content [Pryor] |
| 8846 | Reasons for beliefs can be cited to others, unlike a raw headache experience [Pryor] |
| 8847 | Beliefs are not chosen, but you can seek ways to influence your belief [Pryor] |
| 1743 | The greatest deterrence for injustice is if uninjured parties feel as much indignation as those who are injured [Solon, by Diog. Laertius] |