11 ideas
20349 | Metaphysics aims at the essence of things, and a system to show how this explains other truths [Richardson] |
20351 | Metaphysics needs systems, because analysis just obsesses over details [Richardson] |
20350 | Metaphysics generalises the data, to get at the ontology [Richardson] |
9540 | A 'value-assignment' (V) is when to each variable in the set V assigns either the value 1 or the value 0 [Hughes/Cresswell] |
9541 | The Law of Transposition says (P→Q) → (¬Q→¬P) [Hughes/Cresswell] |
9543 | The rules preserve validity from the axioms, so no thesis negates any other thesis [Hughes/Cresswell] |
9544 | A system is 'weakly' complete if all wffs are derivable, and 'strongly' if theses are maximised [Hughes/Cresswell] |
20356 | Humans dominate because, unlike other animals, they have a synthesis of conflicting drives [Richardson] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
20366 | A mind that could see cause and effect as a continuum would deny cause and effect [Richardson] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |