Managers are not confronted with problems that are independent of each other, but with dynamic situations that consist of complex systems of changing problems that interact with each other. I call such situations messes.… Managers do not solve problems, they manage messes. —RUSSELL ACKOFF,1 operations theorist
Russell Ackoff, “The Future of Operational Research Is Past,” Journal of the Operational Research Society 30, no. 2 (February 1979): 93–104.
