What's important though is that writing only emerged about 5,000 years ago. So what that means is that all the people before there was any writing, every word that they ever said, every utterance disappeared. No trace. Evanescent. Gone.
关键点在于，书写只有在 五千年前才开始出现。这就意味着 在人类开始学会记录之前， 人们说过的每个词，每句话， 都消失了，没有踪影，一去不返了。