Stephen Marglin is a Professor of Economics at Harvard University. His published papers and books range over the foundations of cost-benefit analysis, the workings of the labor-surplus economy, the organization of production, the relationship between the growth of income and its distribution, and the process of macroeconomic adjustment. His recent work has focused on the foundational assumptions of economics and how these assumptions make community invisible to economists. Dr. Marglin has also been an adviser to governments and international agencies, for-profit concerns, and non-profit organizations in many different countries, most recently serving as an adviser on tax reform to the secretary of the treasury of Puerto Rico.