Correctness just doesn't do what it's supposed to do but then also design and design is one of those things it's a little harder to put your finger on initially, but it really is something to bear in mind especially toward terms end when you tackle your own final projects.

正确性“，就是有没有做应该做事情,然后是“设计“,刚开始时，“设计“相对来说比较难一点,但是这是直到这个学期末,都要记住的东西,当你处理的自己的最终方案时。

计算机科学课程节选 : 哈佛公开课