And as I mentioned last time, this was the state of the art until the 17th century.

包括巴比伦人在内的很多人，认为是,最先进的技术。

麻省理工公开课 - 计算机科学及编程导论课程节选

And the engineering part of that is sort of the part that I talked about in one slide, when I talked about how do you convert this scientific advance into something that can be delivered all over the world.

这其中的工程部分就是,我曾经在一个幻灯片中讲过的,在我讲到,如何将先进的科学技术成果转化为,可以在世界范围传播的东西

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