You can not define being exactly on time.

The most important things cannot be measured.

When a worker has reached a stable state, further training will not help him.

One need not be eminent in any part of profound knowledge in order to understand it and to apply it. The various segments of the system of profound knowledge cannot be separated. They interact with each other. For example knowledge about psychology is incomplete without knowledge of variation.

There must be consistency in direction.

Knowledge needs to be a verb.

Shrink, shrink variation, to reduce the loss.