On September 19, 1997, the New York Times announced the discovery of a group of earthen mounds in northeastern Louisiana. The site, known as Watson Brake, includes 11 mounds 26 feet high linked by low ridges into an oval 916 feet long. What is remarkable about this massive complex is that it was built around 3400 B.C., more than 3,000 years before the development of farming communities in eastern North America, by hunter-gatherers, at least partly mobile, who visited the site each spring and summer to fish, hunt, and collect freshwater mussels... Social complexity cannot exist unless I it...