Tim Lewens is Professor of Philosophy of Science at the University of Cambridge, where he is also a Fellow of Clare College. His past publications include Organisms and Artifacts: Design in Nature and Elsewhere (MIT Press, 2004), and Darwin (Routledge, 2007). He is also a member of the Nuffield Council on Bioethics and runs the ERC-funded project 'A Science of Human Nature? Philosophical Disputes at the Interface of Natural and Social Sciences'.