What It Takes to Make a Fancy Hand Ax: A Fancy Brain
In anthropology departments, the debate has long simmered: Was it an improvement in manual dexterity or intelligence that allowed our human ancestors to begin making sophisticated stone tools? According to one group of scientists, figuring out the answer required only a pair of high-tech gloves and a trained craftsman who could make both simple stone knives and more complicated hand axes. The craftsman wore gloves studded with electronic sensors that tracked his his hand movements. Lead researc