Ernest Sosa

In this book, Ernest Sosa explains the nature of knowledge through an approach originated by him years ago, known as virtue epistemology. Here he provides the first comprehensive account of his views on epistemic normativity as a form of performance normativity on two levels. On a first level is found the normativity of the apt performance, whose success manifests the performer's competence. On a higher level is found the normativity of the meta-apt performance, which manifests not necessarily first-order skill or competence but rather the reflective good judgment required for proper risk assessment. Sosa develops this bi-level account in multiple ways, by applying it to issues much disputed in recent epistemology: epistemic agency, how knowledge is normatively related to action, the knowledge norm of assertion, and the Meno problem as to how knowledge exceeds merely true belief. A full chapter is devoted to how experience should be understood if it is to figure in the epistemic competence that must be manifest in the truth of any belief apt enough to constitute knowledge. Another takes up the epistemology of testimony from the performance-theoretic perspective. Two other chapters are dedicated to comparisons with ostensibly rival views, such as classical internalist foundationalism, a knowledge-first view, and attributor contextualism. The book concludes with a defense of the epistemic circularity inherent in meta-aptness and thereby in the full aptness of knowing full well

For me the two-day workshop was an excellent experience. It was very good to be reminded of all those issues that I had grappled with so intensely in earlier years, and I very much appreciated the opportunity to think about them again and to try to put them in perspective with the stimulus of the critical teams’ focused attention. I am very pleased and grateful for the intense attention and challenge to my views, and for the excellent comments. I will do my best to respond with some helpful discussion.

The theory of knowledge has two sides - epistemology and a bridge to join them: that a belief is justified if and only if obtained by appropriate use of an adequate organon - a principle of theoretical epistemology requiring an organon or manual of practical methodology. Such organon justification is internalist. (How could one ever miss one's source for it?) But it leads briskly to skepticism on pain of regress or circularity - or so it is argued in section 1. In section 2 we consider the epistemology embodied in the Socratic elenchus, which provides a new angle on how methodology relates to epistemology and to science and metaphysics. Thus are we made to face once again the organon account of justification: our internalist bridge principle. That account proves in section 3 to be a special case ,of a more general argumentative account of justification, which in turn agrees with intuitions so powerful as to be enshrined already in our dictionaries. Good rhetoric suggests therefore that 'justification' and its cognates be yielded to the argumentative account; in which case justification must likely fall from its status as principal concept of epistemology. Justification is hence unlikely to be all that is required in general for knowledge, nor is it likely to be what is always required in any premises of use to justify anything. That way, apparently, lies regress or circularity. Better to demote justification to the status of one way for a belief to be appropriate or apt for knowledge, while allowing other ways not dependent on already attained justification: perception, perhaps, or introspection, or memory.

It is argued that knowledge is a form of action. It is a kind of successful attempt to attain the truth. The success must avoid a particular sort of “epistemic luck”. It must derive from competence rather than luck. Knowledge, then, is a judgment or belief that aims at truth and attains accuracy not by luck but through the agent’s cognitive adroitness, so that the attainment is apt. A higher grade of knowledge then requires that the agent attain aptly not only the accuracy (truth) but even the aptness of that first-order success. This more fully apt success is on a higher level of epistemic achievement, and in this respect is a special case of a general truth of performance normativity that applies across domains of human performance, whether in the arts, in sports, in the professions, and so on. An attempt in general reaches that higher level of achievement by being not only apt but fully apt.

Epistemology is too far-flung and diverse for a survey in a single essay. I have settled for a snapshot which, though perforce superficial and partial, might yet provide an overview. My perspective is determined by the books and articles prominent in the recent literature and in my own recent courses and seminars. Seeing that the boundaries of our field have shifted through the ages and are even now very ill-marked, I have chosen two central issues, each under vigorous and many-sided discussion in recent years and at present: (A) Scepticism, and (B) Theories of Justification; and in each case I shall focus on work either published or widely discussed within the last five years.

According to the main tradition, knowledge is either direct or indirect: direct when it intuits some perfectly obvious fact of introspection or a priori necessity; indirect when based on deductive proof stemming ultimately from intuited premises. Simple and compelling though it is, this Cartesian conception of knowledge must be surmounted to avoid skepticism. Seeing that the straight and narrow of deductive proof leads nowhere, C. I. Lewis wisely opts for a highroad of probabilistic inference. But how can one arrive at a realm inaccessible through direct knowledge having set out from one thus accessible? How could probabilistic inference offer any help? There are two different answers to these questions in Lewis's writings, and he moves from one to the other under pressure of well known objections from perceptual relativity. Our action divides into three acts, which we review in turn.

From the back cover: "Ever since Plato, philosophers have faced one central question: What is the scope and nature of human knowledge? In this volume the distinguished philosopher Ernest Sosa has collected his essays on this subject written over a period of twenty-five years. All the major topics of contemporary epistemology are covered: the nature of propositional knowledge, externalism versus internalism, foundationalism versus coherentism, and the problem of the criterion. The resulting book is a valuable resource for scholars and can serve as a textbook for graduate seminars in epistemology."