What is the 5 Whys technique?
The 5 Whys is a technique used to determine the root cause of an issue. By repeatedly asking the question “Why” (five is a good rule of thumb), you can discover symptoms which may lead to the reason a problem exists.
Liberating Structures defines a similar technique called Nine Whys. It's literally more of the same.
- Determine the Root Cause: 5 Whys from iSixSigma
- 5 Whys: Getting to the Root of a Problem Quickly from Mind Tools
- Nine Whys on Liberating Structures