"Once a suitable mate is located, humans engage in various peculiar mating rituals. The male, for example, may give the female a bundle of plant geni… - Steve Stewart-Williams

Certainly, the human-animal distinction is still workable; after all, we rarely make errors in assigning entities to one category or the other. But after Darwin, the distinction suddenly seems arbitrary – as arbitrary as the equally workable distinction between, say, turtles and non-turtles.

The reproductive benefits of polygyny were so great for genes located in male bodies that the male mind might still have evolved to take advantage of those opportunities, if and when they did arise. As a result, men may harbor strong polygamous desires — much stronger than women’s — even if these desires are frustrated for most men throughout most of their lives.

When it comes to the traits we consider most important in a long-term mate, human beings are largely monomorphic. This is one of the most significant findings of these studies; however, it is easily overlooked when the discussion becomes fixated on traits that people consider less important but where sex differences are found. By shining a spotlight on these traits, we may create an inaccurate picture of our species, even though the differences are real. Our picture of human nature may be built on a foundation of exceptions to the rule. The rule — the fact that males and females in our species are surprisingly similar in many ways — may be relegated to the background. By taking genuine differences and then exaggerating their importance, our picture of our evolved nature may become a caricature: It may contain a recognizable grain of truth but distort its object.