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English

One implication of this would be that no one would gain knowledge just by believing something that happened to be true. For example, an ill person with no medical training, but with a generally optimistic attitude, might believe that he will recover from his illness quickly. Nevertheless, even if this belief turned out to be true, the patient would not have known that he would get well since his belief lacked justification.

Chinese

柏拉图将知识定义为被证实的真实 的信念 (被相信的事物 ) 。 这个定义暗示我们不能因为「相信一件事并且那件事是真实的」便说我们知道(了解) 这件事。 一个没有任何医学知识的病人相信他很快会康复,即便日后事实如此,我们不能说这个病人知道 他会好,因为他的相信在当时缺乏证实。