The picture of the software designer deriving his design in a rational, error-free way from a statement of requirements is quite unrealistic. No system has ever been built that way, and probably none ever will. Even the small program developments shown in textbooks and papers are unreal. They have been revised and polished until the author has shown us what he wishes he had done, not what actually did happen.
—David L. Parnas and Paul C. Clements1
Product Owners, Business Analysts, and Product Managers are primarily concerned with the “what shall we build?” question. They may ...
