Inca bureaucrats recorded all the goings-on in their bustling empire using knotted cords called khipu, where the position and order of the knots represented numbers. They relied on the khipu system to track people, taxes, produce, livestock, and products like woven cloth and beer.
Because khipu were so vital to the Inca government, and because the khipu itself is such a sophisticated way of recording numbers, colonial writers decided that these tools must be the exclusive knowledge of a very specialized, elite class of bureaucrats. But a recent study, analyzing hair from a khipu made around 1498 CE, suggests that even common folk had a good grasp of this intricate way of recording numbers.
A lasting signature on a gorgeous piece of work
University of St. Andrews archaeologist Sabine Hyland and her colleagues recently analyzed a stand of hair from a 500-year-old khipu—one they expected to be the handiwork of an especially high-ranking member of the Inca empire, based on how beautifully it was crafted.
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Source: Ars Technica
