Samir Okasha is Professor of Philosophy of Science at the University of Bristol, where he has taught since 2003. He was awarded a European Research Council Advanced Investigator Award in 2012 for a research project entitled 'Darwinism and the Theory of Rational Choice', and he has written over 100 articles in leading journals on diverse topics across philosophy of science and evolutionary biology. He is also the author of several books, including Philosophy of Science: A Very Short Introduction (OUP, 2002), and Evolution and the Levels of Selection (OUP, 2006), for which he received the Lakatos Award.