Ernest Sosa is a Professor of Philosophy at Brown University and Rutgers University. He is author of Knowledge in Perspective (Cambridge University Press, 1991) and of papers in metaphysics and epistemology.Enrique Villanueva is a Research Fellow at the Instituto de Investigaciones Juridicas, Universidad Nacional Autonoma de Mexico. He is author of papers and books in philosophy of mind and history of philosophy, and editor of Philosophical Issues from 1992 to 2000.

• 1 Skepticism and Contextualism. (Ernest Sosa). 2 Skepticism, Tracking, and Warrant. (James E. Tomberlin).3 The Contextualist Evasion of Epistemology. (Hilary Kornblith).4 Sensitivity, Indiscernibility And Knowledge. (Keith Leher).5 Replies. (Ernest Sosa).6 Contextualism and Externalism: Trading in One Form of Skepticism for Another.(Robert J. Fogelin).7 Scrutinizing a Trade. (Jay F. Rosenberg).8 What Has Contexualism to Do with Skepticism? (Enrique Villanueva).9 What Has Contexualism and Levels of Scrutiny. (Luis M. Valdes- Villanueva).10 Is Contextualism Stable ? (Micheal J. Williams).11 Replies. (Robert J. Fogelin).12 Contextualism and Skipticism. (Stewart Cohen).13 Contextualism and the Real Nature of Academic Skipticism. (Peter D. Klein).14 Reply to Cohen. (John Hawthorne).15 Scepticism, Contextualism and Closure. (Josep L. Prades).16 Replies. (Stewart Cohen).17 Cogency and Question-Begging: Some Reflections on McKinsey’s Paradox.and Putnam’s Proof. (Crispin Wright).18 On Wright ‘s Diagnosis of McKinsey’s Argument. (Alfonso Garcia Suarez).19 Transmission and Closure. (Bob Hale).20 Warrant-Transmission, Defeaters and Disquotations. (R.M. Sainsbury).21 Replies. (Crispin Wright).22 Vagueness and Partial Belief. (Stephen Schiffer).23 Vagueness and Indirect Disclosure. (Manuel Garcia- Carpintero).24 Stephen Schiffer’s Theory of Vagueness. (Paul Horwich).25 Vagueness as a Psychological Notion. (Lourdes Valdivia).26 Partial Belief and Borderline Cases. (Jorges Rodriguez Marqueze).27 Vagueness- Related Attitudes. (David Barett).28 Replies. (Stephen Schiffer).29 Scepticism and the Principle of Inferential Justification. (John Greco).30 Scepticism and Epistemic Kinds. (John Greco).31 The Principle of Inferential Justification,Scepticism and Causal Beliefs.(Josep E. Corbi).32 Memory and Justification: Hookway and Fumerton on Scepticism. (Carlos J. Moya and Tobies Grimaltos.33 Replies. (Christopher Hookway).Contributor.