This book explores all of human history, starting from when a group of Homo Sapiens first decided to leave a small region in east Africa. People faced a unique problem because the skeletal changes needed to walk upright narrowed their hips. Reality is that Live and Learn. Different reason why agriculture continued, despite its drawbacks, was because a growing number of people bought into it. Small villages began to form, and that brought some specialization. Humans began to try to tame nature both in the fields and around their homes. Present Transformation of Greed from a Sin to a Boon.