The SIUCC (Seminario Interuniversitario de Ciencia Cognitiva / Inter-University Workshop on Philosophy and Cognitive Science) annual conferences are three-day workshops, intended to focus on the contributions of an influential philosopher. This 26th edition will be focused on the work of J. David Velleman and will take place at the University Carlos III de Madrid, hosted by the Faculty of Humanities, in November 22-24, 2017