The conference will be at Utrecht, The Netherlands, in one of the historical building in the Centre of Utrecht, and will be sponsored by the Tjalling Koopmans Institute (U.S.E. research Institute) and the Descartes Centre for the History and Philosophy of the Sciences (and hopefully a third funding agency). It is a two-day conference, on 6 and 7 April, 2017. We have already nine papers that will be presented and we are looking for additional contributions. Please submit your proposals to Marcel Boumans (m.j.boumans@uu.nl) no later than January 10, 2017. Accepted submissions will be announced by January 20, 2017. Full papers are due by March 15, 2017.