JPI quite like the phrase "stochastic uptime" but that's also why stuff like statistical process control and 6-sigma exist. We used to try to reduce wasteful variability by making sure we understood how things worked.
I remember when "fuzzy logic" was all the rage in automatic control systems so we learned about it at uni. It was only supposed to be fuzzy within carefully designed limits. Carefully designed because if your pressure vessel went above the known tolerances it would explode, killing the workers trying to do their jobs nearby.
Wil van Antwerpen