
A centuries-old grid of holes in the Andes may have been a ‘spreadsheet’ for accounting and exchange
Authors: Jacob L. Bongers, Tom Austen Brown Postdoctoral Research Associate, University of Sydney and Charles Stanish, Exec. Director, Institute for the Advanced Study of Culture and the Environment; Professor of Anthropology, University of South Florida In 1931, geologist Robert Shippee and US Navy Lieutenant George R. Johnson led one of the first aerial photography expeditions […]








