Andrzej Krzywda:

My goal is to help you improve the design of the if/else based codebases. Yes, that probably means creating new method, extracting new object. It might be a bit OOP. If that’s not your taste and you’re fine with if/else then this may not be for you.

He then goes on to refactor a deeply nested Ruby method by extracting some classes that are responsible for their own behavior. This is perhaps a bit rudimentary to long-time OOP folks, but I see a lot of code out there looking like Andrzej’s example method so there’s plenty of people who would benefit from understanding this concept.