Piiparinen suggests that urban planning often fails to account for these true motives, and ends up chalking up bad outcomes to fate:
"There is a famous quote that states: "He who fails to plan, plans to fail". This is true on some level, but it doesn't get to the gist of failure, particularly in planning. In fact one just has to look at the myriad of urban plans that have not only remained unrealized, but that have created the opposite of their intent. For example, urban renewal was on its face a serious, rationalized effort to get rid of blight and prevent ghettos. Yet what it really did was create ghettos through dislocation and isolation."