Tarek K. A. Hamid has been a Professor of System Dynamics at the Naval Postgraduate School since 1986. Dr. Hamid received his Ph.D. in System Dynamics at MIT, and the Master’s in EES&OR at Stanford. Prior to joining NPS, he spent two and a half years at the Stanford Research Institute. In 1999/2000 he was an affiliate at Stanford’s Medical Informatics Department (part of Stanford’s Medical School), where he worked on developing system dynamics models of human physiology and metabolism. Dr. Hamid has authored two books and more than 50 papers on System Dynamics and its applications. Together with Prof. Stuart Madnick (of MIT), he was awarded the 1994 Jay Wright Forrester Award (presented annually by the System Dynamics Society to recognize the best contribution to the field). Dr. Hamid’s latest book, Thinking in Circles about Obesity: Applying Systems Thinking to Weight Management, (Springer, 2009) was “Highly Commended” in the British Medical Association’s 2010 BMA Book Awards.