I really like this point. We are socialized at a young age to see things certain ways. Like a kid born and raised in feudal Japan would be a lot different that a kid born today in Britain. Seeing these patterns we are also trained at a primordial level to interpret them independent from what we are taught. Being educated by nature and society are two different things that come together to make our reality.
Fascinating that in a country of free speech where all most forms of protest and talk can be tolerated people were so against publishing a book that thought differently. Perhaps they were afraid to endorse a dangerous idea like this because they were still so afraid of a "Red Scare" like reaction?
In my sociology class we have been discussing the connections between social norms of genders and of different cultures. Whenever I picture a typical American childbirth i can always see the father nearby or helping in the delivery process, maybe even being one of the first to see the baby. In the Niger I guess the men see it as a totally female role until he can be used as labor, common in more underdeveloped communities.