When you see data, doubt [them]! When you see measurements, doubt them!
Quality control is applicable to any kind of enterprise. In fact, it must be applied in every enterprise.
Quality control starts and ends with training.
Failure is the seed of success
The ideas of control and improvements are often confused with one another. This is because quality control and quality improvement are inseparable.
As with many other things, there is a surprising amount of prejudice against quality control, but the proof of the pudding is still in the eating.