However, Saad suggests that rather than looking at our upbringings as influenced by either genetics or environment, we should look at them from the viewpoint that both aspects play a pivotal role. Our ability to surpass genetics alone is one of the things that separate us from other species in the animal kingdom. Since humans have the capability to surpass these innate structures, it is proposed that many aspects of our culture today are a result of the type of society we have evolved into and that evolutionary psychology has in turn become an innate part of popular culture in itself. .
Furthermore, Saad discusses a variety of ways to study culture from an evolutionary standpoint. One suggestion is to think of culture as either an adaptation, brought about by selective pressures that yield reproductive or survival benefits, or an exaptation, brought about as a byproduct of other evolutionary processes. This will change the paradigm through which culture is viewed, and the way culture is studied. Another suggested approach is to look at it from a coevolutionary point of view, bringing genes and culture together in such a way that they affect each other simultaneously. The final suggested method of studying culture through an evolutionary paradigm is to look at a cultural 'tree of life' and the cultural remains left by the past as a way of tracking trends over the years. .
After examining the various approaches, Saad presents two case studies. In the first, he analyzes collective wisdoms centered on topics involving various relationships. When he looked at kin selection, he postulates that men tend to focus more on physical appearance when choosing mates, while females typically look at social status. He noted a similar dimorphism with feelings on casual sex. While men are more likely to have casual sex, women are ambivalent about who they sleep with because of the parental investment theory.