An early and enduring advanced technology originating 71,000 years ago in South Africa

@article{Brown2012AnEA,
  title={An early and enduring advanced technology originating 71,000 years ago in South Africa},
  author={Kyle S. Brown and Curtis W. Marean and Zenobia Jacobs and Benjamin J. Schoville and Simen Oestmo and Erich C. Fisher and Jocelyn Bernatchez and Panagiotis Karkanas and Thalassa Matthews},
  journal={Nature},
  year={2012},
  volume={491},
  pages={590-593}
}
There is consensus that the modern human lineage appeared in Africa before 100,000 years ago. But there is debate as to when cultural and cognitive characteristics typical of modern humans first appeared, and the role that these had in the expansion of modern humans out of Africa. Scientists rely on symbolically specific proxies, such as artistic expression, to document the origins of complex cognition. Advanced technologies with elaborate chains of production are also proxies, as these often… 

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