That's just an example of a perfectly legitimate technology which gets bashed or ignored when its results do not fit the preconcieved ideas of the fellows running the show. As I said his methods were spotless and even peer review confirmed his findings on some sites from Arnhem Land and Kimberley. In short, he employed perfectly sound methods which gave results which have been "shocking".
Since we've already staryed very far afield I'll add one final note before being incinerated by Ian. At the moment we know very little about human evolution and even migrations up to 2000 years ago. Genetics have probably caused more problems than they sorted and the problems get worse as our knowledge grows and, ironically, our analytical capabilities improve.
For example I have a biologist friend who did research into the
Guanches, the aboriginal inhabitants of the Canaries who were wiped out by the invading Castillans in the XV and XVI centuries. According to "up to date" research they were purebred Cro-Magnons coming from the Atlas Mountains and surviving in isolation until modern times. But Cro-Magnons are not normally believed to have developed seafaring habilities. The Canaries were connected to Africa through a land bridge during the Miocene (24 to 5 million years ago), when man still didn't exist (unless you believe some early hominids to be "men" in the modern sense). So you now understand the magnitude of the problem.
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Fas: Ite, Maledicti, In Ignem Aeternum.