We care about knowledge because it helps us get around in the world, and because we are social creatures who rely on other people, and we want to allow them to rely on us—and so we need to be able to discuss our reasons for doing and believing as we do. This course examines the individual and environmental conditions necessary for a person to have knowledge, addressing themes of justification and responsibility, processes of belief formation, types of beliefs (beliefs based on inference, perception, and testimony), and social conditions on the creation of both knowledge and ignorance. It will address questions like: Are there some beliefs that count as knowledge simply because they seem clearly true to us? Should we trust our perception—is it responsible to do so? Is it responsible to trust others by default? Can we have knowledge simply by being responsible, if our beliefs are true? How does membership in cultural groups facilitate or impair our having true beliefs, and should that lead us to challenge and complicate individualistic conceptions of knowledge?