Sanjoy Mahajan, an engineering professor at The Massachusetts Institute of Technology (MIT) can come up with an extremely close estimate of almost any quantity you can think of. For example, do you know how much money a Brinks truck can carry? Or the annual budget for the State of Delaware? Professor Mahajan discusses how he comes up with spot-on estimates when starting with almost no information. Click here to read the full article, in The Chronicle of Higher Education.