The first lesson was don't shoot towards the middle of the goal and the second more general lesson was what?

结论一是不要从中路射门,第二个更普遍的结论是什么

耶鲁公开课 - 博弈论课程节选

The goal is to move towards a bug free program.

而是去得到一个没有bug的程序。

麻省理工公开课 - 计算机科学及编程导论课程节选