Say's Law: An Historical AnalysisSay's Law the idea that supply creates its own demand has been a basic concept in economics for almost two centuries. Thomas Sowell traces its evolution as it emerged from successive controversies, particularly two of the most bitter and long lasting in the history of the discipline, the general glut controversy that reached a peak in the 1820s, and the Keynesian Revolution of the 1930s. These controversies not only involved almost every noted