The ideas of control and improvements are often confused with one another. This is because quality control and quality improvement are inseparable.
Kaoru IshikawaAs much as 95% of quality related problems in the factory can be solved with seven fundamental quantitative tools.
Kaoru IshikawaAs 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.
Kaoru Ishikawa