translation.en: And then from about 500 years ago, humans began to link up globally through shipping, through trains, through telegraph, through the Internet, until now we seem to form a single global brain of almost seven billion individuals.
translation.zh: 然后大约500年之前 人类开始全球化的联系 通过轮船，通过铁路， 通过电报，通过网络， 直到现在我们似乎已经形成 一个单独的全球性大脑 它包含着近70亿个个体。