A big part of what this approach is trying to fight is function complexity. If you really re-wrote the entirely of your functions everytime you went to edit the

A big part of what this approach is trying to fight is function complexity. If you really re-wrote the entirely of your functions everytime you went to edit them I think it would end up slowing the programmer and the program down. Programming is often a state of flow where you have a grand idea for how a mechanism should act and then you task yourself with implementing that idea in code. Sometimes large complicated functions are the best way to translate that idea. The approach the author describes sounds like it would create lots of small functions that don't really help you solve the problem at hand. Good idea to keep in mind though. Everytime you go to edit a function and find yourself dreading it, maybe it's time to rewrite that one.