It is terribly important to appreciate that some things remain obscure to the bitter end.

Certain management policies-stretching of credit resources, for example-may lead to great progress in good conditions; but, like the Grand Prix car in comparison with the Land Rover, they may not be robust enough to survive when the going gets tough.

The system of transportation is not coherent; it is not treated as integral. Roads compete with with railroads and airlines in chaotic fashion, and at immense cost to the nation.

The strategies that managers employ are at least as important as the facilities at their disposal.

A stochastic process is about the results of convolving probabilities-which is just what management is about, as well.

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.