The Royal Institute of Philosophy London Lecture Series: How Do We Know? The Social Dimension of Knowledge. We often appeal to experts. But which experts should be relied upon? How can an ordinary person who lacks special training in the relevant sphere make a sound decision as to which self-proclaimed expert (if any) should be relied upon? Some people deny there are genuine experts altogether; it’s all just a sham, a fraud. Is this correct, or are there genuine experts? If so, how can non-experts detect who they are? Alvin Goldman has taught philosophy at the University of Michigan, the University of Arizona, and Rutgers University. He has written five books, more than 160 scholarly papers, edited numerous volumes, and been the subject of several volumes devoted to his work. This lecture was presented on November 1, 2019.