Just eye-balling, but it does seem as though these drops in Y-diversity were far less extreme outside of europe and the mideast region.
That said, chiefalchemist is jumping to conclusions not supported by the data in the papers when he offers his conjectures on violence etc. The only thing we can really conclude with authority based on this data is that whatever happened, more of it happened in europe and the mideast.
> From the article: "It appears over the course of the next 2,000 years, the Old World male population plummeted to one-twentieth of what it had been beforehand"
With that said, let me rephrase then...the "rise" of the "violence gene profile":
1) Was more effective in some parts of the world then in others.
2) That profile is still with us today. Perhaps not as dominant but none rhe less not gone.
3) We may think we're a peace loving species but our gene pool says other wise.
Again, yesterday's "winning effort" is today's murder. Today's mental health issues arw yesterday's hero (e.g., an unfiltered willingness to kill).
We can talk about being rational, intelligent, etc. but the fact is we still have a gene pool that historically says otherwise.
That said, chiefalchemist is jumping to conclusions not supported by the data in the papers when he offers his conjectures on violence etc. The only thing we can really conclude with authority based on this data is that whatever happened, more of it happened in europe and the mideast.