In Wealth, Poverty, and Politics , Dr. Thomas Sowell of the Hoover Institution, Stanford University, examines the reasons for large differences in income and wealth between nations and among groups within nations. A wide range of geographic, demographic, cultural, and political factors are examined, not to find a single factor or a single combination of factors that will explain all economic differences, but to show how particular combinations of factors limit or expand the possibilities for specific nations and peoples at specific times and places. Dr. Sowell also examines some popular explanations of these differences and shows why they will not stand up under scrutiny. In