Justified True Belief

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A Justified True Belief is a justified belief that is a true belief.



  • http://en.wikipedia.org/wiki/Justified_true_belief
    • Justified true belief is a definition of knowledge that is most frequently credited to Plato and his dialogues.[citation needed] The concept of justified true belief states that 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:
      1. P is true
      2. S believes that P is true, and
      3. S is justified in believing that P is true
    • This theory of knowledge suffered a significant setback with the discovery of Gettier problems, situations in which the above conditions were seemingly 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.
  1. Chisholm, Roderick (1982). "Knowledge as Justified True Belief". The Foundations of Knowing. Minneapolis: University of Minnesota Press. ISBN 0-8166-1103-3. 


  • (Breck et al., 2000) ⇒ Eric J. Breck, John D. Burger, Lisa Ferro, Lynette Hirschman, David House, Marc Light, and Inderjeet Mani. (2000). “How to Evaluate your Question Answering System Every Day and Still Get Real Work Done Export.” In: Proceedings of the Second Conference on Language Resources and Evaluation (LREC 2000)
    • QUOTE: It is interesting to note that a concise, justified truth is similar to the Platonic claim that knowledge is a justified true belief.