Without theory there is nothing to modify or learn.
The ultimate purpose of collecting the data is to provide a basis for action or a recommendation.
It is not necessary to change. Survival is not mandatory.
When people try to do what they can not do, they wish to give up.
A system can not understand itself.
Failure of management to plan for the future and to foresee problems has brought about waste of manpower, of materials, of the machine-time, of all which raise the manufacturer's cost and price that the purchaser must pay