(FB 1542572175 Timestamp)
—“Humans intuit and organize as packs and herds, mixed as together as one. Women intuitively construct a herd. Men intuitively construct a pack. Polygamy is the crudest solution of this competition between pack and herd –monogamy the ultimate balance of pack and herd. Monogamy (pairing off) is the optimum nash equilibrium possible – no individual has his or her optimum but together they have the optimum for all.”—Michael D. Abbott
I’ll augment that a bit in that packs of men domesticated herds of females before they domesticated herds of other herd animals, and partnered with wolves(dogs), who are the other pack animals. The fact that women have always been property of males offset by the care of fathers and brothers for their daughters (once they understood such a thing) is antithetical to the modern mind, but it is the reason females still demonstrate herd instincts as prey and males still demonstrate pack instincts as predators, and why civil societies form marriages as the means of satisfying the demands of both.