Reasons, Justification, and Defeat

Traditionally, the notion of defeat has been central to epistemology, practical reasoning, and ethics. Within epistemology, it is standardly assumed that a subject who knows that p, or justifiably believes that p, can lose this knowledge or justified belief by acquiring a so-called 'defeater', whether that is evidence that not-p, evidence that the process that produced her belief is unreliable, or evidence that she has likely misevaluatedher own evidence. Within ethics and practical reasoning, it is widely accepted that a subject may initially have a reason to do something although this reason is later defeated by her acquisition of further information. However, the traditional conception of defeat has recently come under attack. Some have argued that thenotion of defeat is problematically motivated; others that defeat is hard to accommodate within externalist or naturalistic accounts of knowledge or justification; and still others that the intuitions that support defeat can be explained in other ways. This volume presents new work re-examining the very notion of defeat, and its place in epistemology and in normativity theory at large.

The essays are engaging and well written, both rigorous and accessible, and make interesting and practical contributions to their fields.

Jessica Brown is Professor of Philosophy in the Arché Research Centre at the University of St Andrews. She has worked on a wide range of topics within philosophy of mind, epistemology, moral responsibility, and the methodology of philosophy, and has published two monographs : Anti-Individualism and Knowledge (MIT Press, 2004) and and Fallibilism (OUP, 2018). In addition, she is the co-editor of the OUP volumes Knowledge Ascriptions(with Mikkel Gerken, 2012) and Assertion (with Herman Cappelen, 2011). She is also Editor of the Philosophical Quarterly, Associate Editor of the Stanford Encyclopaedia of Philosophy, and a Fellow of the Royal Society of Edinburgh.Mona Simion is a Lecturer in Philosophy at the University of Glasgow, where she is Deputy Director of the COGITO Epistemology Research Centre. Her research is in the fields of epistemology, philosophy of language, ethics, and feminist philosophy. Her work has been published in major philosophy journals including Nous, Journal of Philosophy, and Philosophical Studies, and she has been awarded several prestigious grants including a Mind Fellowship and a LeverhulmeResearch Grant.