When what you have built is effectively a bike, and the customer requests 2 additional wheels, you don't duct tape them on. You rewrite from scratch, building t

When what you have built is effectively a bike, and the customer requests 2 additional wheels, you don't duct tape them on. You rewrite from scratch, building the customer a car this time. Sometimes, you can salvage parts. Maybe the frame is still good when the customer reveals they actually want a minivan instead of a car. Maybe you can reuse the engine and wheels and transmission and seats. But the other stuff has got to be replaced. Why is our industry so against rewriting? There seems to be a massive focus on building stuff so generic such that it is magically extendable into anything. Hint: it never is. It never will be. Write specialized code, which is always smaller, clearer, easier to understand code against the heavily abstracted bullshit you'd otherwise get. And yes, sometimes that means the "bicycle wheel" library/framework/language needs to be replaced in your shop.