Rough and Tumble: Aggression, Hunting, and Human Evolution Weight TidbiT v2 Water Temperature Data TidbiT v2 Water Temperature Data Logger Despite commitments to renewable energy and two decades of international negotiations Technology that evolved from wooden spears to stone tipped spears and ultimately to the bow and arrow increased the distance between predator and prey and facilitated an emotional detachment that allowed hunters to stalk and kill large game Rough and Tumble offers a new perspective on human evolution by decoupling ideas of aggression and predation to build a more realistic understanding of what it is to be human