Toolmaking

That man has a hand, rather than a paw, hoof, fin or wing has set him above all other animals and has enabled him to develop a culture based on toolmaking and tool using.

Either that, or “you have two different groups of hominins with two totally different toolmaking traditions occupying the same landscape at the same time yet never intermixing,” said the study’s lead author, Daniel Adler, an anthropologist at the University of Connecticut.