. There is after all, no point in claiming that the purpose of a system is to do what it constantly fails to do. - Anthony Stafford Beer

The problem with managing either a business or a prison by periodic rather than continuous inspection is that the "variables" are likely to be seriously out of control before the discrepancy is noted.

A slowly moving queue does not move uniformly. Rather, waves of motion pass down the queue. The frequency and amplitude of these waves is inversely related to the speed at which the queue is served.

Too close a view may interfere with one's grasp of an overall problem or concept