Peter Kroes is professor in the Philosophy of Technology at the Delft University of Technology, The Netherlands. He has an engineering degree in physics (1974) and wrote a PhD thesis on the notion of time in physical theories (University of Nijmegen, 1982). He has been teaching courses in the philosophy of science and technology and the ethics of technology, mainly for engineering students. His research in the philosophy of technology focuses on the nature of technical artifacts and engineering design, the modeling of socio-technical systems and the nature of technological knowledge. His book publications include: A philosophy of technology; from technical artefacts to socio-technical systems (together with Pieter Vermaas, Ibo van de Poel, Maarten Franssen and Wybo Houkes, Morgan and Claypool, 2011), Functions in biological and artificial worlds; comparative philosophical perspectives (editor with Ulrich Krohs, MIT Press, 2009) and The empirical turn in the philosophy of technology (editor with Anthony Meijers, JAI/Elsevier Science, 2000). He also edited the part on the Philosophy of Engineering Design of the Handbook of Philosophy of Technology and Engineering Sciences (editor. Anthonie Meijers, Elsevier, 2009). Further information may be found on his website: http://tbm.tudelft.nl/index.php?id=32462&L=0.