Stathis Psillos is Associate Professor in the Department of Philosophy and History of Science at the University of Athens, Greece. His book "Causation and Explanation" (Acumen, 2002) has received the British Society for the Philosophy of Science Presidents' Award. He is also the author of "Scientific Realism: How Science Tracks Truth" (Routledge, 1999) and the editor (with Martin Curd) of the "Routledge Companion to the Philosophy of Science" (forthcoming).