“We don’t have laws,” I said. “Never been allowed to. Have customs, but aren’t written and aren’t enforced—or could say they are self-enforcing because are simply way things have to be, conditions being what they are. Could say our customs are natural laws because are way people have to behave to stay alive.
Natural Law in a state of anarchy works fairly well. Darwinian-ly so. Sure, not perfect, but the point being that anarchy does not necessitate chaos.