Epistemologist
Epistemologists are philosophers who study knowledge. They examine the nature, sources, and limits of human knowledge, and they develop theories about the justification of beliefs. Epistemologists address questions such as: What is knowledge? How do we acquire knowledge? What are the limits of knowledge? What is the relationship between knowledge and belief? They may also study the history of epistemology and the work of major epistemologists, such as Plato, Aristotle, and René Descartes.