They didn't
where are the genetic variations on theme?
the genetic differences that have accumulated since the human and chimpanzee species diverged from our common ancestor, constituting approximately thirty-five million single-nucleotide changes, five million insertion/deletion events, and various chromosomal rearrangements. We use this catalogue to explore the magnitude and regional variation of mutational forces shaping these two genomes, and the strength of positive and negative selection acting on their genes. In particular, we find that the patterns of evolution in human and chimpanzee protein-coding genes are highly correlated and dominated by the fixation of neutral and slightly deleterious alleles. http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=16136131
I believe the answer is that humans did not evolve by natural section but by many hundreds of thousands of years of tribal warfare, which is not natural selection at all. Most modern evolutionists stick to the idea of natural selection only
Yes it is by definition of natural selection
.....Yes it is by definition of natural selection .....
precisely correct.
It is not old or modern tribal warfare only. The best modern example of natural selection in action is the 1945 wholsale raping of German women by Russian troops. The biological purpose of the raping is to introduce Russian genes into the German gene pool. .
It can be argued that black Africans defeated their neighbors and sold them to slavery. The superior gene pool prevailed over the inferior pool. The result was a strngthening of those left behind. The action was natural selection in action
Modern man is new by evolutionary timelines. We can’t say with certainty how the natural selection occured but being uncertain is not a bad thing
Warfare is an unusual branch of evolution and I've never heard it classified as natural selection. Is the atomic bomb going off in Japan natural? Was the extermination of 6 million Jews during WWII natural? Of the European Jews that survived is their IQ being measurably higher than the total Jewish population before the war natural? Could their unusual intelligence be the result of 2,000 years of unnatural persecution? I'm failing to see how war is the definition of natural selection.