15 ideas
| 6253 | Reason is our power of finding out true propositions [Hutcheson] |
| 10688 | 'Equivocation' is when terms do not mean the same thing in premises and conclusion [Beall/Restall] |
| 10690 | Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall] |
| 10691 | Logical consequence needs either proofs, or absence of counterexamples [Beall/Restall] |
| 10695 | Logical consequence is either necessary truth preservation, or preservation based on interpretation [Beall/Restall] |
| 10689 | A step is a 'material consequence' if we need contents as well as form [Beall/Restall] |
| 10009 | Substitutional quantification is just a variant of Tarski's account [Wallace, by Baldwin] |
| 10696 | A 'logical truth' (or 'tautology', or 'theorem') follows from empty premises [Beall/Restall] |
| 10693 | Models are mathematical structures which interpret the non-logical primitives [Beall/Restall] |
| 10692 | Hilbert proofs have simple rules and complex axioms, and natural deduction is the opposite [Beall/Restall] |
| 6256 | Can't the moral sense make mistakes, as the other senses do? [Hutcheson] |
| 6252 | Happiness is a pleasant sensation, or continued state of such sensations [Hutcheson] |
| 6257 | You can't form moral rules without an end, which needs feelings and a moral sense [Hutcheson] |
| 6254 | We are asked to follow God's ends because he is our benefactor, but why must we do that? [Hutcheson] |
| 6255 | Why may God not have a superior moral sense very similar to ours? [Hutcheson] |