translation.en: And you start to do things like graph things that we might be interested in -- the total worldwide population, for example, or some measure of social development or the state of advancement of a society.
translation.zh: 然后我们就开始以感兴趣的东西为主题 制作图标，比如世界人口 或者是某钟衡量社会发展的标准， 或者社会进步的状态，