The mid — 20th - century
anatomists were correct to worry about the human foot as they did: Ours
turns out to have evolved in one direction, while those of African apes were evolving in quite another.
Turning up the pain threshold a notch,
anatomist and paleoanthropologist Bruce Latimer of Case Western Reserve University in Cleveland, Ohio, limped to the podium, dangling a twisted human backbone as evidence of real pain.