Steven W. Popper (PhD, Economics, U. of California, Berkeley) is a RAND Senior Economist and Professor of Science and Technology Policy in the Pardee RAND Graduate School. His work on micro level economic transition focuses on the area of technological change. From 1996 to 2001 he was the Associate Director of the Science and Technology Policy Institute (S&TPI) which provided research and analytic support to the White House Office of Science and Technology Policy and other agencies of the U.S. government executive branch. His S&TPI work included principal authorship of the Fourth U.S. National Critical Technologies Review, advice on federal R&D portfolio decision making for the National Science Board, and authorship of Presidential transition documents on S&T issues of national importance. He is an elected AAAS Fellow and served as the chair of its section on industrial science and technology. Dr. Popper’s work on strategy development and foresight has focused on the problem of planning under conditions of deep uncertainty He is co-developer of Robust Decision Making, a methodological framework for analytical decision support under deep uncertainty. He also led the team which developed the Systematic Technology Reconnaissance, Evaluation and Adoption Methodology (STREAM) for the Transportation Research Board of the National Research Council to provide support for making informed, mission-specific adoption decisions over innovative technologies. Dr. Popper is co-editor of Decision Making under Deep Uncertainty: From Theory to Practice (Springer) the first handbook of DMDU methods and is the founding chair for education and training of the international Society for Decision Making under Deep Uncertainty.