“An agreed-on language is fundamental to success in any discipline, yet confusion has permeated product development because companies continue to define "requirements" as any kind of customer input: customer wants, needs, benefits, solutions, ideas, desires, demands, specifications, and so on.… — Anthony Ulwick 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,… — Derek Hatley 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)