Justified true belief

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Justified true belief is one definition of knowledge that states for someone to have knowledge of something, it must be true, it must be believed to be true, and the belief must be justified. 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

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]

[edit] References

[edit] Related topics

• Theory of justification