The late Horacio Arlo-Costa was Professor of Philosophy at Carnegie Mellon University, Pennsylvania. Arlo-Costa served as editor for the Review of Symbolic Logic, as area editor in epistemology for Synthese and as a member of the editorial board for the Journal of Philosophical Logic. Vincent F. Hendricks is Director of the Center for Information and Bubble Studies, University of Copenhagen, ... Read moreDenmark. His recent publications include Handbook of Formal Philosophy (2012), Epistemic Logic: 5 Questions (2010), Probability and Statistics: 5 Questions (2009), Mainstream and Formal Epistemology (2007) and The Convergence of Scientific Knowledge (2001). Johan van Benthem is University Professor emeritus of pure and applied logic at the University of Amsterdam, Henry Waldgrave Stuart Professor of Philosophy at Stanford University and Distinguished Foreign Expert at Tsinghua University, Beijing. His recent publications include Logical Dynamics of Information and Interaction (2011), Modal Logic for Open Minds (2010), Exploring Logical Dynamics (1996) and Language in Action (1995). Van Benthem is co-editor, with Alice ter Meulen, of the Handbook of Logic and Language (1997). Show Less