The way to evolve a human from a chimp-human ancestor is not to speed the ticking of the molecular clock as a whole. Rather the secret is to have rapid change occur in sites where those changes make an important difference in an organism’s functioning. HAR1 is certainly such a place. So, too, is the FOXP2 gene, which contains another of the fast-changing sequences I identified and is known to be involved in speech.
I wish Charles Darwin could see the new levels of banality he has given us. The "fact" of his theory now underwrites the ascribing anything and everything to evolution, no matter how ludicrous. Evolution has become a tautology. Whatever we find in biology is simply chalked up to evolution's amazing powers.
A core tenet of evolution is that the biological variation, upon which natural selection operates, is independent of need. This view has been falsified so many times that evolutionists such as Pollard no longer skip a beat when reporting on evolution's "secret" miracles. In this case, evolution's secret is to focus the mutations right where they are needed to construct jaw-dropping designs. In other words, evolution targeted a whole bunch of mutations to create the human from the human-chimp ancestor. The silliness of evolution continues to reach new heights.