In January 2013, John C. Liu, New York City’s comptroller, wrote to the residents of the city about his audit of the New York City Department of Parks and Recreation (DPR). Liu summarized his office’s findings: “The audit found that DPR was not carrying out and overseeing capital construction projects in a timely and cost effective manner.” To investigate the existence of the "planning fallacy" in organizations, information from nearly 1,800 capital projects undertaken between 1998 and 2008 was obtained from the office of the chief engineer of the New York City DPR. In light of the data, how severe was the planning fallacy during this time and could it be used for overcoming the planning fallacy?