The five whys is a question asking method used to explore the cause/effect relationships underlying a particular problem. Ultimately, the goal of applying the 5 Whys method is to determine a root cause of a defect or problem. The following example demonstrates the basic process:
* My car will not start. (the problem)
1. Why? - The battery is dead. (first why)
2. Why? - The alternator is not functioning. (second why)
3. Why? - The alternator belt has broken. (third why)
4. Why? - The alternator belt was well beyond its useful service life and has never been replaced. (fourth why)
5. Why? - I have not been maintaining my car according to the recommended service schedule. (fifth why, root cause)
http://en.wikipedia.org/wiki/5_Whys
No comments:
Post a Comment