13 ideas
21750 | Science is sympathetic to truth as correspondence, since it depends on observation [Quine] |
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] |
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] |
21748 | More careful inductions gradually lead to the hypothetico-deductive method [Quine] |
21749 | Altruistic values concern other persons, and ceremonial values concern practices [Quine] |
21751 | Love seems to diminish with distance from oneself [Quine] |
19384 | Space and time are the order of all possibilities, and don't just relate to what is actual [Leibniz] |