Gettier Problem Cards
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Description: Three overlapping circles of truth, belief and justification meet around a K, beside a stopped clock that is right by luck. Is knowledge just a true belief that you have good reason to hold? You glance at a clock that reads two o'clock, and it is two o'clock. Your belief is true and justified, yet the clock stopped yesterday. Gettier showed that lucky truth is not knowledge. Source: Plato, Theaetetus, Edmund Gettier, Is Justified True Belief Knowledge?, 1963.
