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Science News, Feb 3, 2007 by Jim Klein
Regarding "Stone Age Role Revolution: Modern humans may have divided labor to conquer" (SN: 12/2/06, p. 358), economists would suggest that population growth allowed the division of labor. Notice that the most advanced economies are those with the largest populations, allowing for specialization in production. As Adam Smith wrote in 1776, "The division of labor is determined by the extent of the market"
JIM KLEIN, SAN FRANCISCO, CALIF.
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