There is no such thing as "done" software. Everything program that is written must be maintained but PHB's never even consider maintenance costs. Consequently,

There is no such thing as "done" software. Everything program that is written must be maintained but PHB's never even consider maintenance costs. Consequently, there is no such thing as a "build" and "maintain" phase of software. Something that takes 10 developers to build will take 10 developers to maintain.