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Discussion on: Open/Closed Principle

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Enrique Moreno Tent

Maybe i am missing something important here.

How does "not having to make changes to your classes" help to keep complexity low?

In the example you gave about the cookie machine, I would agree. It is a good way to extend the possibilities of the CookieMachine class, and it seems more flexible, but it actually seems to me like the complexity is bigger, than just adding a new "case".