The reality of the evolution of man

Give up your ideas of there being some sort of lower to higher progression. Current evidence indicates that the current dominance of Homo Sapiens is just the luck of the draw.

...only 30,000 years ago there may have been four distinct human species walking the planet. Not one, as there is now, not two, as was thought to be the case up until very recently ( H. neaderthalensis and H. sapiens ), but certainly three, and very possibly four human species walking the earth at the same time. And yet over the next 15,000 years all but one of them died out.

One could not wish for a clearer indication of the role of chance in the survival of our species. If things had gone only slightly differently in the recent past then modern humanity might not have been represented by H. sapiens , but instead by H. neaderthalensis or by H. floresiensis or possibly even H. erectus .

Or perhaps there would have been no representative at all.