Theory of justification is a part of
epistemology that attempts to understand the justification of
propositions and
beliefs. Epistemologists are concerned with various epistemic features of belief, which include the ideas of justification,
warrant,
rationality, and
probability. Of these four terms, the term that has been most widely used and discussed in the past twenty years is "justification". Loosely speaking, justification is the reason why someone (properly) holds the belief, the explanation as to why the belief is a true one, or an account of how one knows what one knows.
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