The computer doesn't care how your code is arranged. It doesn't care if there's duplication of the same functionality, if the code to perform some functionality is scattered all over the place, or if classes and methods and variables have misleading names. The computer doesn't even care if the code gives the right answer. The computer doesn't care if the code runs to completion. It's perfectly happy to abend, or core dump, or get caught in a loop.

But we, as software developers (or managers or employers of software developers) should care.

It's all about