4 ideas
| 468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
| 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] |
| 7907 | Human killing is worse if the victim is virtuous [Buddhaghosa] |