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Sharpening the mind

The discovery of stone tools dating to 71,000 years ago at a site in South Africa suggests that the humans making them had developed the capacity for complex thought, and passed this knowledge down the generations. See Letter p.590

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Figure 1: Archaeological evidence for modern behaviour in early Homo sapiens.
Figure 2: A complex point.


  1. *This article and the paper under discussion1 were published online on 7 November 2012.


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Correspondence to Sally McBrearty.

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McBrearty, S. Sharpening the mind. Nature 491, 531–532 (2012).

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