Epistemology is a formal, rigorous, self-paced course in knowledge, truth, and justification. A 4–6 hour course proceeds from the foundations through the structure of knowledge, observation, causation, and refuting skepticism. Every lesson is available at three depths, backed by a section-scoped AI tutor, adaptive practice, and AI-graded homework, a course test, and a final exam. The course is public and requires no account.