Justified true belief
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Justified true belief is one definition of knowledge that states in order to know that a given proposition is true, one must not only believe the relevant true proposition, but one must also have justification for doing so. In more formal terms, a subject S knows that a proposition P is true if, and only if:
- P is true
- S believes that P is true, and
- S is justified in believing that P is true
The 'justified true belief' theory of knowledge suffered a significant setback with the discovery of Gettier problems, situations in which the above conditions were met but that many philosophers disagree that anything is known.[1] Robert Nozick suggested a clarification of "justification" which he believed eliminates the problem: the justification has to be such that were the justification false, the knowledge would be false.
[edit] See also
[edit] References
- ^ Chisholm, Roderick (1982). "Knowledge as Justified True Belief". The Foundations of Knowing. Minneapolis: University of Minnesota Press. ISBN 0816611033.
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