Chucking stones at baboons; the first hominin passtime? From The Making of Man.

For the Australian anatomist Raymond Dart, the fossilized bones scattered among the caves of South Africa were testimonies to the murderous nature of early humans. The recovered skulls of baboons and our australopithecine relatives often looked as if they had been bashed in, and Dart believed the bones, teeth, and horns of slain game animals were the weapons hominins used to slaughter their prey. (He gave this sort of tool use the cumbersome name “osteodontokeratic culture.”) Our origins had not been peaceful; Homo sapiens was a child of violence. In his infamous paper “The Predatory Transition From Ape to Man” Dart wrote;

The blood-bespattered, slaughter-gutted