The issue focused on the growth of modern humans in Africa. [28] He provided this graph to explain the nature of the growth of modern humans in Africa:

There are many problems with this graph. For example, it does not take into account the huge difference in population size between humans and Neanderthals. But this is not the real problem. The real problem is that it does not take into account the huge difference in population size between humans and Neanderthals. But this is not the real problem