一個唔識中文嘅英國人被困喺一間房到，手頭上有一本中英對照詞典。當佢要解答一個用中文提問嘅問題時。他就根據詞典查出呢個問題嘅英文翻譯，然後用詞典將佢嘅答案翻譯成中文回答問題，然後佢認為自己答啱咗，實際上他又真係答啱。但佢有冇辦法證明自己真係答啱呢？事實上佢冇辦法去確定。但喺呢個情況下佢係有理由相信自己答啱，呢個亦符合本質理由“詞典係正確”。
An United Kingdom man who does not understand Chinese is trapped in a room with a Chinese-English dictionary at hand. When he was going to answer a question asked in Chinese. He looked up the English translation of the question according to the dictionary, and then used the dictionary to translate his answer into Chinese to answer the question, and then he thought he answered correctly, but in fact he really answered appropriately. But is there a way for him to prove that he's right? In fact, he can't be sure. But in this case he has reason to believe that he has answered correctly, which is also in line with the essential reason that the dictionary is correct uranium.