1. Department of Philosophy , Lehigh University , 15 University Drive , Bethlehem , PA , 18015 , USA
2. Center for Logic, Epistemology and History of Science, State University of Campinas , Rua Sérgio Buarque de Holanda, 251, 13083-859 , Campinas , SP , Brazil
3. Henry R. Luce Professor of Cognitive Robotics and the Philosophy of Knowledge, Department of Psychology, Lehigh University, 15 University Drive , Bethlehem , PA , 18015 , USA
4. Department of Psychology , Lehigh University , 17 Memorial Drive East , Bethlehem , PA , 18015 , USA