
Root cause analysis: 5 whys and Ishikawa done right, with a real example and the most common mistakes
The 5 whys and the Ishikawa diagram are the two most taught and most misused root-cause tools: they get filled in ten minutes, land on "lack of training" or "human error" and the problem returns next month. This guide shows how to do them right, with a real late-delivery example and the mistakes that make them useless.











