In collusion, writing good code not only require knowledge but also require compassion. To understand people's pain and mistakes, to think about your teammate and to help everyone achieve a better life.

Think about how good it is if you can build a system at “2 half brain quality” and then people just need use 1 half of their brain to maintain it. You can fix bug in a blink of an eye, run tests and give it to tester, done. Everything will be done in a easiest way and fixing bug or refactoring can be easy like breathing. The most heavy task in programming is not about building application, but it’s about maintain them and if you wrote something you can’t understand, then you will suffer for the rest of your life.