Thinkie: Special-Cause Versus Common-Cause Variation

This is a process control Thinkie taking from Deming.

Trigger: A process has gone haywire for some reason.

Transformation: First decide if that reason happens repeatedly or just this once. React accordingly.

One class of mistakes comes from not paying attention to a process. Sometimes it works, sometimes it doesn’t, who knows? 🤷 That test is red sometimes…