You will find there's sort of Center-of-the-street theory, also, which many dub theassimilation principle. Vinayak Eswaran and colleagues outline a concept such as this inside of a current paper, exactly where they argue that genetic proof implies that there have been two distinct waves of immigration outside of Africa – https://gatherbookmarks.com/story9648070/the-smart-trick-of-situs-qq-that-nobody-is-discussing