And that even 5,000 years ago, people were already building on something much older, with its origins stretching back tens of thousands of years -- to the geometric signs of Ice Age Europe and far beyond, to that point, deep in our collective history, when someone first came up with the idea of making a graphic mark, and forever changed the nature of how we communicate.
早在5000年前， 人们就已经受荫于前人的创造了。 这些创造可追溯到千百万年前， 追溯到冰川时期欧洲的几何符号，乃至更早； 在那个人类历史中遥远的瞬间， 某个人第一次想到要用图画来做标记， 他自此永远地改变了人类交流方式的本质。