Although I generally agree with the concept the truth is it's not easy to stop using `if` or `switch` completely. By applying rules described in the post you ar

Although I generally agree with the concept the truth is it's not easy to stop using `if` or `switch` completely. By applying rules described in the post you are just pushing the problem around. At some point, somehow, a decision must be made which branch to follow. Want to create two methods instead of `if` fine, do it - how are you going to decide which of them to call? You want to use polymorphism, fine, do it - how are you going to decide which class to instantiate? What to use enums with methods on them, fine, how are you going to decide which enum to use? You may say "Oh, I am just deserializing user's input to enum. I don't have to decide." Fine, so you've just pushed decision onto users of your application. Sure, you may use some other methods, especially when you must choose from multiple options (map instead of switch, etc.) but you should always remember - just by avoiding decision making in one place, doesn't mean you've completely eliminated it from business process.