EPISTEMOLOGY – The theory of knowledge, or How we know What we know. Often refereed to as a branch of philosophy that investigates the origin, nature methods, and limits of human knowledge.
Epistemology is the investigation of what distinguishes justified belief from opinion.
There is also the study of knowledge or epistemology and that is is concerned with many questions, like what are the necessary conditions of knowledge? What are its sources? What is its structure, and what are its limits?
Epistemology is the study of justified belief and tries to answer such difficult questions as what makes justified beliefs justified? Is justification internal or external to one’s own mind? How is knowledge created and spread.