John Preston is Professor of Philosophy at the University of Reading. He is the author of Feyerabend: Philosophy, Science and Society (1997) and Kuhn's The Structure of Scientific Revolutions: A Reader's Guide (2008). He edited the third volume of Feyerabend's Philosophical Papers and co-edited The Worst Enemy of Science?: Essays in Memory of Paul Feyerabend (with Gonzalo Munévar and David Lamb, 2000).