" The tribal life wasn't something humans sat down and figured out. It was the gift of natural selection, a proven success—not perfection but hard to improve on. Hierarchalism, on the other hand, has proven to be not merely imperfect but ultimately catastrophic for the earth and for us. When the plane's going down and someone offers you a parachute, you don't demand to see the warranty. "

― Daniel Quinn , Beyond Civilization: Humanity's Next Great Adventure