I don't think DMOC's list was in any order, but I would bold, underline, highlight: 21. Lack of chopping/whipping. Normal speed, 20 hammers every 3-5 turns starting on turn 15 is huge. I don't know when most start chopping. Usually i try to hook up 2 resources and grow the city (~3) building warriors. I then usually do one chop for the first settler. Then hook up another resource/mine a hill and chop a worker. Then they both chop a second settler. Usually I switch to slavery when that second settler is out the door. Is there a better time? I figure the earlier anarchy would slow me down, but later it stops more cities. I switch when i am hopefully ready to whip in the second city and the capital in a turn.