A first good month is not an improvement. Hypothesis testing in plain words: how much does the process move on its own, and is this gap bigger than that?...

Every improvement list I have seen is honest. Almost none of them are decisions. A field note on the difference between ranking your problems and actually choosing between them....

Most cause analysis fails in the first ten minutes, when a plausible answer arrives early and the list of possible causes never gets made. A field note on casting the...

The problem you keep solving keeps coming back because you have been treating the symptom, not the cause. A field note on root cause analysis and the Five Whys....

Every measurement is the thing you want to see plus the error in how you saw it. A field note on trusting the ruler before you trust the number....

"We fixed it" is the easiest win to claim and the hardest to prove. A field note on the baseline: the before-photo every improvement needs, and how to take one....

A one-page Data Collection Plan decides whether your improvement data is proof or opinion. Here is what goes in it, and why teams that skip it measure the wrong thing....

Walk into any Green Belt classroom and the same artifacts appear on the wall: SIPOC diagrams, fishbones, FMEAs, control plans. Six months after project close, the metrics drift back to...

Navigate the complete Lean Six Sigma belt hierarchy with insights from actual implementations worth $4.4 billion across three industries....

Lean management transforms organizations through waste elimination and flow optimization, creating the essential foundation before adding Six Sigma's statistical power....

Lean Six Sigma succeeds brilliantly when understood correctly, yet 70% of implementations fail. Discover the $4.4 billion difference between textbook theory and field reality....