Slings and Arrows.

Abstract

...lethal inventions are predicated on our intelligence, the usual story of which involves competition, the accumulated advantages of smartness, and the extinction of the weak. Yet we are the weak, and without technology cannot be strong. So the standard evolutionary tale of us becoming brainier by degrees until we were able to make stuff cannot be true. The alternative, that things came first, evolving us, seems counter-intuitive. But it fits the evidence.