The theory was created by professor Juan José Castillos, of the Uruguayan Institute of Egyptology, which tackled the issue during the 2nd National Summit for Egyptology Studies "Religion in Everyday Life," last Thursday (30th) in the evening, in the southern Brazilian city of Curitiba. According to him, the roots of the Egyptian civilisation lie in the attitude of those individuals, who are called "aggrandisers" by some specialists – including anthropologists, social scientists, historians, and sociologists.
The "aggrandisers" appear in many different moments of the Human history and pre-history, according to Castillos. Among these characters, he names Julius Caesar, Genghis Khan, and Stalin. In his opinion, those are people who had a great power thirst, probably due to a genetic predisposition, who were usually unhappy, and who sometimes caused tragedies. In many different periods, though, they have somehow contributed for the advancement of their societies.
Eh. Still doesn't explain why they appeared when they did, assuming these "aggrandizers" have been around for eons.