What I actually said is that figuring out how to transcend the dominance hierarchies of our primate cousins is a central adaptation of human development. And until women could be "mate guarded" - something that was completely impossible until the rise of patriarchy, and the social and sexual control of women that arose at that time, nobody cared who the father of a child was because everyone took care of everyone as a primary survival strategy and descent went through the female line. This is something that still goes on in many places around the world today and was a major aspect of many cultures throughout time.
"When seventeenth-century Jesuit missionary Paul Le Jeune lectured a Montagnais Indian man about the dangers of the rampant infidelity he’d witnessed, Le Jeune received a lesson on proper parenthood in response. The missionary recalled, “I told him that it was not honorable for a woman to love any one else except her husband, and that this evil being among them, he himself was not sure that his son, who was there present, was his son. He replied, ‘Thou hast no sense. You French people love only your own children; but we all love all the children of our tribe.’”
Ryan, Christopher. Sex at Dawn (pp. 122–123). Harper Perennial. Kindle Edition.
