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# Justified True Belief

• According to Plato, true belief is not enough for knowledge
• It must be $justified$
• Person who is justified is in a position to speak to objections of their belief
• A lucky guesser will have more trouble defending their belief
• When you have knowledge, then you have an opportunity to teach it
• $S$ knows that $P$ if any only if:
• $P$ is true
• $S$ beliefs that $P$ is true
• $S$ is justified in believing that $P$ is true

Philosophy