LeBlanc brilliantly argues that warfare has been a part of human existence throughout history. He uncovers a six-million-year-old equation of population growth, resource stress, and warfare as he surveys the archaeological, ethnographic, and historical records from cultures around the world. This distinguished book explores the implications of his findings by considering if humans are doomed by genetic heritage to fight each other, and arrives at a hopeful conclusion: by understanding why humans fought in the past, modern man, with technology and awareness, can avoid warfare in the future.