The only thing that compiler needs to know is kind of what pattern to look for in the rest of your code.

编译器需要知道的唯一的东西是,用来在剩下的代码中寻找的函数形式。

哈佛公开课 - 计算机科学课程节选

The reason for that complexity is because your immune system needs to be able to respond to all the potential foreign invaders that we could encounter.

整个系统之所以如此复杂是因为,免疫系统需要应对所有,我们要面对的来犯之敌

耶鲁公开课 - 生物医学工程探索课程节选