chapter  1
5 Whys
ByFrank Voehl
Pages 10

The 5 Whys is a technique to get to the root cause of the problem. It is the practice of asking five times or more why the failure has occurred in order to get to the root cause. Each time an answer is given, you ask why that particular condition occurred. As outlined in this chapter, it is recommended that the 5 Whys be used with risk assessment in order to strengthen the use of the tool for innovation and creativity-enhancing purposes.