He received the B.Tech. with Honors in Electrical Engineering from the Indian Institute of Technology, Bombay, in 1981, and the Ph.D. in Electrical Engineering from the California Institute of Technology, Pasadena, in 1987. On being informed to his surprise that graduate students at Caltech actually have to leave some time he joined the faculty of the Department of Electrical and Systems Engineering at the University of Pennsylvania where he is also a member of the David Mahoney Institute for Neurological Sciences. He has haunted the corridors at Penn since then excepting for visiting forays to the Helsinki Institute of Technology, Caltech, Bell Labs, Siemens, and Microsoft Research. His research interests are in probability, information, communication, learning, and security though what he really likes doing is flipping coins and playing soccer. He has recently published The Theory of Probability, Explorations and Applications with the Cambridge University Press, a mathematical narrative comprised in part historical ruminations, part whimsy, and part mathematical foundations, based on his idiosyncratic lectures on the subject over the better part of twenty five years. He was a recipient of the Christian R. and Mary F. Lindback Award for Distinguished Teaching in 2004 and this has given him the most pleasure of all.