4 ideas
8920 | Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz] |
19699 | A Gettier case is a belief which is true, and its fallible justification involves some luck [Hetherington] |
22725 | When players don't meet again, defection is the best strategy [Axelrod] |
22724 | Good strategies avoid conflict, respond to hostility, forgive, and are clear [Axelrod] |