Some people eventually realize that the code quality is important, but they lack of the time to do it. This is the typical situation when you work under pressure or time constrains. It is hard to explain to you boss that you need another week to prepare your code when it is “already working”. So you ship the code anyway because you can not afford to spent one week more.

I hope you'll forgive me for defaulting to the documentation: I think it will do a better job of explaining it than me.

do I really have to do something like that in order to have my local modules working? it's quite impracticable to explain it to a team! there's nothing a little bit more straightforward?