Analyzes the 20th century by the numbers, often in the words of the tabulators themselves. Commentators and historical figures featured include George Gallup, Robert and Helen Lynd (authors of Middletown) , Sen. Daniel P. Moynihan, Alfred Kinsey, W.E.B. DuBois, Jane Addams and Julia Lathrop, Frederick Jackson Turner, James Q. Wilson, Frank Fukuyama, and William Julius Wilson.