Chapter 11 Value Engineering of Requirements
What, Why, When, and How of Value Engineering
Up until now, we have had a very little discussion of the costs of certain features that customers may wish to include in the system requirements. Part of the reason is that it made sense to separate that very complex issue from all of the other problems surrounding requirements elicitation, analysis, representation, validation, verification, and so on. Another reason for avoiding the issue is that it is a tricky one.
In the early 1980s, Barry Boehm proposed a model for software projects called the funnel curve that helped explain why software effort and cost prediction were so hard (Boehm 1981). The model had been around ...
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