ABSTRACT
I have argued that since Homo sapiens became a new and established species on the face of this earth, evolution has continued its relentless passage in a way that has been seldom noticed. Whereas evolution had once focused on modified anatomical forms to facilitate behavioural change, during the Age of Power psychogenetic changes took place, as a result of natural selection, without any physical changes being visibly evident. While people tend to be conscious of ethnic differences, the differences that have most far-reaching effects on human behaviour relate to the four basic groupings human evolution has left as its legacy. The four pure forms comprise Primaevals, Warriors, Professionals and Slaves. All four have interbred so that the human scene has been bequeathed a minority of true types and a multiplicity of hybrids. Such diversity has greatly complicated gender relationships.
