... Brian Joiner provides another reason why targets are harmful: there are “3 ways to improve the figures: distort the data, distort the system and improve the system. Improving the system is the most difficult.” And so most often targets results in distortion of the data (faulty data) or distortion of the system (meet target by shifting resources and effort from other parts of the system). Both of those actions are harmful to the system.
continue reading: The Problem with Targets