8 ideas
13432 | The essence of a circle is the equality of its radii [Leibniz] |
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] |
15677 | Moral right is linked to validity and truth, so morality is a matter of knowledge, not an expression of values [Habermas, by Finlayson] |
15671 | Move from individual willing of a general law, to willing norms agreed with other people [Habermas] |
12696 | Bodies are recreated in motion, and don't exist in intervening instants [Leibniz] |