I've occasionally pitched SPC as a source of concepts to mine, starting with XmR charts and the Nelson or Western Electric rules. I think that actually, observ

I've occasionally pitched SPC as a source of concepts to mine, starting with XmR charts and the Nelson or Western Electric rules. I think that actually, observability has always been one of the weakest areas in tech -- we reinvent a lot of it ourselves while the wider world abounds in rich concepts of measurement, inference and control. SPC, control theory, inference engines, classifier systems, measurement theory, design of experiments, fuzzy sets, Dempster-Shafer theory, avionics, system dynamics, cybernetics and frankly a bajillion other disciplines that I've never heard of and never will. Sometimes in R&D, the R is much more profitable than the D. Which point, I should say, the article makes reasonably well.