POSTGRADUATE EDUCATION AT A TIME OF TECHNOLOGY AND TENSION. Costis Maglaras is the Dean of Columbia Business School, and the David and Lyn Silfen Professor of Business at Columbia University. He received his BS in Electrical Engineering from Imperial College, London, in 1990, and his MS and PhD in Electrical Engineering from Stanford University in 1991 and 1998, respectively. He joined Columbia Business School in 1998, and prior to becoming dean served as chair of the Decision, Risk & Operations division at the Business School, Director of the School's doctoral program, and was a member of the executive committee of the University's Data Science Institute. He is a Fellow of INFORMS, an Honorary Fellow of the Foreign Policy Association, and a Member of the Economic Club of New York.