But that "organization" comes about through the will and intention of the members of the society - not some unconscious force that just emerges. It continues to be reinforced (or not) depending on the will of the population. And I didn't say that social expectations are evolutionarily adaptive. In fact, in a previous comment I demonstrated to you how they quite often are evolutionarily disruptive. How the fuck is it adaptive for Chilean royalty (for example) to have so much better access to nutrition that they are a full head taller and have demonstrably better teeth than others in their culture? Answer: it's not!