“These needs, then, are just as real as any other requirements; we refer to them here as required constraints or design constraints,… — Derek Hatley Real Requirements Copy Share Image
“Ask residents of Manhattan what functions the city provides for them, and they will give you an impressive list. Do this for… — Derek Hatley Pretty good Copy Share Image
“The point is best made by stating that not all systems are requirements-driven, at least, not driven by formal written requirements of… — Derek Hatley Natural resources Copy Share Image
![“The point is best made by stating that not all systems are requirements-driven, at least, not driven by formal written requirements of the kind we have described so far [Rechtin 97]. As an example: A city is a people-made system, but (with a few notable exceptions) no one actually sits down and…” quote by Derek Hatley](https://sms4smile.com/quotes/img-quotes/137/derek-hatley-75451_natural-resources_the-point-is-best-made-by-stating-that-n_3069045.jpg)