4 ideas
14248 | We could accept the integers as primitive, then use sets to construct the rest [Cohen] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
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] |