Therefore, economy of space without sacrificing performance is a very important issue. The project manager depends on a critical set of core documents for success, namely the objectives, user manual, internals documentation, schedule, budget, organization chart, and floorspace allocation. These serve to distill and clarify thought, and serve as a checklist and a database for monitoring the development process. This allows the project manager to focus on the important task of communication rather than decision making, and keeps his knowledge focused and current. This core set of documents obviates any need for a sophisticated information management system.
Management is everything.
The more focused and efficient the management process, the better the product. The subtle nature of the software building process makes it easy to defects to escape unnoticed Another point made here is that each programming product has a finite lifespan due to the inevitable growth in the number of bugs with ongoing 'corrective' action. Each attempt to fix a known bug has a very high probability of introducing another. This Chapter is partially dated, as the author himself admits in Chapter 19. The advice given in the present Chapter is valid only for the waterfall model, where there is no 'going back'.