なぜなぜ分析5 Whys
Problem Solving
5 Whys
なぜなぜ分析Japanese
Asking "why" repeatedly (typically about five times) to move from a symptom to the root cause.
Examples
- 01Machine stopped, fuse blew, overload, bearing not lubricated, no lubrication standard.
- 02A late delivery is traced to a missing order trigger in the ERP system.
- 03A typo in a contract is traced to a missing review step.