Gary T. Marx is professor emeritus at the Massachusetts Institute of Technology, having also taught at Harvard and the University of California, Berkeley. He is the author most recently of "Undercover: Police Surveillance in America". His writings for academic, policy, and popular audiences have appeared in numerous publications, including the "New York Times", "Wall Street Journal", "Washington Post", "Harvard Business Review", and "New Republic". More information can be found on his website: http: //web.mit.edu/gtmarx/www/garyhome.html.