Michael Huemer is Professor of Philosophy at the University of Colorado. He is the author of numerous academic articles in epistemology, ethics, political philosophy, and metaphysics, as well as several books, including Skepticism and the Veil of Perception, The Problem of Political Authority, and Understanding Knowledge. Bryan Frances has taught and conducted research in universities in several countries. He has published books and articles in epistemology, metaphysics, the philosophy of language, the philosophy of mind, and the philosophy of religion. His books include The Epistemic Consequences of Paradox, An Agnostic Defends God, Scepticism Comes Alive, and Disagreement.