William Dembski (Ph.D., mathematics, University of Chicago; Ph.D., philosophy, University of Illinois at Chicago) is senior fellow of the Discovery Institute's Center for Science and Culture.He has previously taught at Northwestern University, the University of Notre Dame, and the University of Dallas. He has done postdoctoral work in mathematics at MIT, in physics at the University of Chicago, and in computer science at Princeton University, and he has been a National Science Foundation doctoral and postdoctoral fellow. Dembski has written numerous scholarly articles and is the author of the critically acclaimed The Design Inference (Cambridge), Intelligent Design (InterVarsity Press) and No Free Lunch: Why Specified Complexity Cannot Be Purchased without Intelligence (Rowman and Littlefield).