7 ideas
13132 | A snowball's haecceity is the property of being identical with itself [Plantinga, by Westerhoff] |
15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
13768 | Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington] |
13770 | There are many different conditional mental states, and different conditional speech acts [Edgington] |
13764 | Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington] |
13765 | 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington] |
15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |