So you're on the speculation side, as I figured.
You would probably do well to learn the difference between theory and speculation.
These differences are typically minor, especially when talking about people in the same country / area and in the context of work.
Like the minor differences that lead to the cleansing of the Native American population during the Western expansion? Or perhaps the minor differences that existed between the Vikings and natives that lead to the conquering of the British Isles? Or perhaps the minor differences that existed between European Whites, American Indians, and African Blacks that lead to to the legal doctrine of fractional manhood and the one drop rule? Or perhaps the minor differences that lead to social unrest in British occupied India? Or perhaps the cultural differences that contributed to Apartheid in Africa and segregation in the United States? Or perhaps the various on-going ethnic conflicts in Africa? There's also the "trivial" cultural differences that lead to the American Revolution and Civil War.
I could continue citing history
ad nauseam, but that would be an indefinite exercise in the elementary. I'd much rather talk about genetics, psychology, and cognition, especially since you brought up this gem:
These differences are also typically strengths when put together, similarly to research showing that a mother and father behave differently but these differences help the development of the children.
Men and women play complementary roles to one another. Cultures and belief systems do not. IQ differences, the genetic predispositions and differences of various races and ethnic groups, fundamental differences in value systems, and cognitive differences between the sexes are anything but inconsequential. Why do you think they ask for racial information in medicine, or why people, to this day, self-segregate into homogenous communities?
It would appear that the only person speculating here is you, as you seem to be completely oblivious to the other side of the diversity coin.
No actually, we're tired of listening to your sh!t.
We're tired of listening to the most vulgar crap, racist, "music" (=rants), the hip hop community is dead set on inflicting upon us.
The irony here is that you (ET3D) can't even see the animosity forced diversity is causing right in front your eyes. Every diversity article that has appeared on this blog as been met with near unanimous disapproval. "Qualifications, not color!" has been the mantra of the discussion. Similar demands for justice were voiced when the Brendan Eich and Julie Ann Horvath stories were posted here a while back.
Worse yet, not only are you apparently unwilling to do anything beyond a Google search to educate yourself on the issue, you openly criticize people who disagree with you for being ill-versed in the topic, in spite of clear evidence to the contrary. This not only breeds resentment for the "underrepresented" masses – whomever that might be – but also towards people like yourself.
Differences don't make people stronger, they drive them apart.