““Ask residents of Manhattan what functions the city provides for them, and they will give you an impressive list. Do this for all the various stakeholders in the city, and you will have a pretty good set of requirements for Manhattan. This would be a useful exercise for city planners or for anyone considering starting a business in the city. In summary, then, the fact that not all systems are requirements-driven does not diminish the value of analyzing requirements. Whether we carry out the analysis before or after the system exists, it still has great benefits.””
![“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)
![“We [MIT Smart Cities research group] try to identify the fundamental underlying design assumptions that everybody takes as a sort of given and unchallengeable when you think about solving these problems. And we try to challenge those assumptions.” quote by William J. Mitchell](https://sms4smile.com/quotes/img-quotes/a2b/william-j-mitchell-31611_assumption_we-mit-smart-cities-research-group-try-t_291234.jpg)
