Yes, I think we have learned something - quite a lot actually.
We have learned that we are all the same, over the face of the Earth and throughout our collective hominid history.
We are the last hominids left standing, following some six or seven million years of evolutionary selection and chance (Lone Survivors: How We Came to Be the Only Humans on Earth).
We, in the civilized world, are as capable of torture, atrocity and mass murder as any of our predecessors, be they Mongolians led by Genghis Khan, or the British fire-bombing Dresden, or the Germans in The Blitz, or the Americans at Hiroshima, Nagasaki, and Vietnam, etc…
We have learned that one valley over, A Papuan can speak a different language, and war incessantly with “the other”, even as late as ‘yesterday’ (The World Until Yesterday: What Can We Learn from Traditional Societies?).
We have learned that even as tribes, we had the need to invent protocols and ceremonies and traditions to re-integrate our warriors back into our own societies, lest they become Navajo ‘skinwalkers’, and a danger to the very people they were meant to protect (Tribe).
This forum shows that we are learning.
We are tribal hunters and warriors, genetically comfortable with a group size of at most a hundred or two hundred, living in multi-million person societies and cultures which have developed on different continents at different times and under radically different circumstances.
And we have learned that we are heading off the proverbial cliff - together - like a herd of buffalo at ‘Head Smashed In’ by the Oldman River in southern Alberta (Head-Smashed-In Buffalo Jump).
Scapegoating is in our history and our religions - this too we have learned.
The question begs the real question:
What are we going to do with all we have learned ?