Nelson Repenning

is the Associate Dean of Leadership and Special Projects and the Distinguished Professor of System Dynamics and Organization Studies at MIT’S Sloan School of Management. Don Kieffer is a Senior Lecturer in Operations Management at the Sloan School. Todd Astor, M.D., is Medical Director for Lung Transplant at Massachusetts General Hospital. A longer version of this article recently appeared in MIT Sloan Management Review (www.sloanreview.mit.edu).