Having read only fragments from that article, I think that 'the burden of proof has shifted' towards finding whether or not Neanderthals had a sexual division of labour . While many scientists believe that this division existed millions of years ago, the authors cited in the article (Steven Kuhn and Mary Stiner) are of the opposite opinion. They think that it's exactly this presence of sexual division of labour, or lack thereof, what made some races prosper and others become extinct, as was the case with the Neanderthal.
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