On Sat, 01 Aug 2015 19:29:40 +0100, Stephen wrote:

> By the time the blueprint is designed, and implemented. The customer
> knowns more about how the software works and often redefine their
> requirements. This can extend the implementation to the extent it will
> never be finished.

Very true.

Two words you mention at the start, though, are not often enough included 
in software development:  "blueprint" and "design".

Specifically, user interaction design.

Jim



-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw

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