See entire video here: http://www.factualtv.com/documentary/Tribal-Sex-Marriage-All-for-the-Family A woman can have sex with as many men as she likes; if she conceives, the baby belongs to her and her household. The man has no involvement in the raising of the child. A couple gets married but lives apart for three years. How are relationships forged to try to keep the tribe alive? Where is the line drawn between promiscuity and fidelity?