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] |
20877 | Errors in moral practice might be inconsistent or inappropriate principles, or inappropriate application [LaFollette] |
20878 | We can discuss the criteria of a judgment, or the weight given to them, or their application [LaFollette] |
20881 | The act/omission distinction is important for duties, but less so for consequences [LaFollette] |
20886 | Are we only obligated by agreement, or should we always help the weak? [LaFollette] |
20879 | Too many options may open us to unwanted pressures, like being paid very little [LaFollette] |
20880 | Should people be forced to make choices? [LaFollette] |
7604 | Amos was the first prophet to emphasise justice and compassion [Amos, by Armstrong,K] |