ISecond, Egyptians bred dogs for traits at least 5,000 years ago. Who knows what was going on 5,000 years before that. So humans have understood sex and breeding and traits for a long, long time.
I personally think it unknowable that Humans went from bonobo sex lives to chimp sex lives (if they did) because of some higher order of thought or genes or simply culture.
I was posting about primitive societies, read the definition if you don't know what primitive means. Examples I quoted should have made it clear: Australian aboriginals, Pacific Islanders. There are others: sub-Saharan Africa, Native Americans etc. When early explorers met these people and wrote about them, their lifestyles had not changed for tens of thousands of years. So this is why we research primitive societies, because there is a lot of material about them and they give us an insight into humanity before civilisation. Even today, the Trobriand islands have not changed much.
Tahiti was a goldmine in terms of information in regards to culture and sex. They instructed adolescent boys and girls in advanced sexual practices, and then encouraged them to have sex with one-another. Later they married, but non-monogamously, as they didn't connect a wife having sex with another man as anything more than having sex with another man. They felt it was boring to have sex with the same person over and over. Before marriage, a prospective suitor had to prove to a girl's parents that he could satisfy their daughter, by pleasuring her and having sex with her in front of her parents. If he passed, they could marry.
During those experimentative years, they kept population under control by using herbal abortion, or if that didn't work they practiced infanticide.
This sequence of initiation, experimentation and non-monogamous marriage was common amongst many societies, including Africa, Native America, and Australian aboriginal. The aboriginals sexually 'shared' women with the men of her new family after marriage, and 'family' was a much broader concept than what we practice, and would include cousins as well as brothers.
I know nothing of chimps or bonobos as I am not a biologist, I am a psychologist. But certainly, primitive societies held sex in very high regard, in some cases it was considered sacred, and it was well beyond the quick ten-second in and out of a typical primate coupling. Indeed, they practiced techniques that we could learn a lot from if we studied them (as I learned from what I studied all those decades ago).
There is no comparison, as we have to consider these primitive societies had advanced thinking, reasoning and deducting powers equivalent to our own. The only thing they lacked was the knowledge of biology, and the constraints of a patriarchal religion.
