[1] Univ Navarra, Dept Philosophy, E-31080 Pamplona, Spain
[2] Inst Jean Nicod CNRS EHESS ENS, Dept Etud Cognit ENS, F-75005 Paris, France
[3] Univ Melbourne, Dept Philosophy Old Quad, Melbourne, Vic 3010, Australia
[4] Univ Amsterdam, Inst Log Language & Computat, NL-1090 GE Amsterdam, Netherlands