Next Epistemology Introduction Epistemology is the branch of philosophy that addresses philosophical problems surrounding the theory of knowledge.
Epistemology is the study of the origin, processes, and validity of knowledge.
In terms of philosophical theories, metaphysics and epistemology are very closely linked. It is difficult, at times, to distinguish between speculation about the nature of reality, and speculation regarding the knowledge of it. Greek and Medieval Philosophical Problems Sophists, in the 5 th century BC, questioned the possibility of reliable and objective knowledge. Gorgias argued that nothing really exists, that if anything did exist it could not be known, and that if knowledge were possible, it could not be communicated. Protagoras maintained that no person's opinions can be said to be more correct than another's because each is the sole judge of his or her own experience.