1. What Are Requirements?
in which we consider why we are interested in requirements
The most useful products are those where the developers have understood what the product is intended to accomplish for its users and how it must accomplish that purpose. To understand these things, you must understand what kind of work the users want to do and how the product will affect that work and fit into the organization’s goals. What the product does for its users and which constraints it must satisfy in this context are the product’s requirements. Apart from a few fortuitous accidents, no product has ever succeeded without prior understanding of its requirements. It does not matter what kind of work the user wishes to do, be it scientific, commercial, ...
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