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Do Kenya Tools Root Birth of Modern Thought in Africa?

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Science  17 Nov 1995:
Vol. 270, Issue 5239, pp. 1118-1119
DOI: 10.1126/science.270.5239.1118


Mastery of abstract concepts is supposedly signaled by sophisticated tools that suddenly appear in the archaeological record about 50,000 years ago in Europe. But new finds of carefully shaped stone tools in Africa, from a 250,000-year-old site, indicate that modern thought may have taken form much earlier