At the heart of the primals taboo lies the prohibition of incest. Anthropologist Claude Lévi-Strauss argued that the incest taboo is not merely a rule against sleeping with relatives; it is the mechanism that forced humans to "exchange" women between tribes, thus birthing society itself. By forbidding the primal urge for immediate family reproduction, we created politics, economics, and alliances.
Cultural taboos arise from a basic feature of the human mind - Psyche primals taboo family relations primalfetish link