Primitive social organization based its mode of production (obviously, unconsciously) on the simplest harmony with nature. Labor was minimal, sufficient to meet needs. This is an idealization, of course, utopian in excluding human nature and its vices, but a model of hunter-gatherer-herder or agrarian culture. The point of the model is the mode of production. The simplicity of the mode is then echoed in the simplicity of needs. Harmony with nature is built into the material circumstances. This accommodation with nature points to a self-sufficiency that is best fostered by isolation, for as soon as the group in the model — which assumes “society,” but a subconscious one — makes contact with other groups, society properly speaking develops and human vices begin to erode harmony for competition.