Food makes the world go around, according to this absorbing account of how the search for food has shaped human nature. It is more important than love or sex for the simple reason that food is harder to find than a mate. Think of it this way, says Allport, who draws on the research of anthropologists and biologists in presenting her fascinating and provocative theories: Mates are often willing accomplices in the act of mating; food is never a willing accomplice in the act of eating.