Includes bibliographical references and index.

1 Social Norms, Knowledge, and Philosophy ; A Social Norm for Testimony ; Could That Be Philosophy? ; State-of-Nature Thought Experiments ; Empirical Philosophy? ; Experimental Philosophy. Preview of the State-of-Nature Argument Preview of Problems about Knowledge ; 2 What Is Knowledge? ; An Answer That Gives Its Function ; Craig's State-of-Nature Thought Experiment ; Modifications to Craig's Thought Experiment ; What Could Be Asked in the State of Nature? Answers to the Questions Choosing among Conflicting Answers ; 3 Developing a Concept of Knowledge ; An Inquirer's First Steps toward a Concept of Knowledge ; Lots of Work and Testimonial Norms ; Motivation for Self-Evaluation ; Gnowledge ; Gnowledge and Failed Gnowledge. 4 Is That Our Concept of Knowledge? Truth? ; Gettier Examples and Justification ; Testimonial Norms and Gettier Stories ; Why We Should Say Only What We Believe ; Summary of the State-of-Nature Argument ; Is Knowledge a Natural Kind? ; Non-Propositional Objects of Knowledge. 5 What Is Justified Belief? Other Complex Social Norms ; Justified Belief ; Is Justification Clearer than Appearance? ; Clarifying Appearances ; Appearance of Oneself Knowing? ; 6 Justified Belief Is the Appearance of Knowledge ; If It Appears to the Subject to Be Knowledge