Howard Shermanand William M. Duggerengage in a dialogue on social evolution from Institutionalist and Marxist perspectives, each representing one side. Together they explore the way society develops using the equally radical, but very different approaches of Thorstein Veblen and Karl Marx.William M. Duggeris Professor of Economics at the University of Tulsa, USA. Howard J. Shermanis Professor Emeritus at the University of California, USA