5 why’s
A way to quickly uncover the root cause of the problem by asking 5 consecutive “why..” questions.
easy
10 explore minutes
Preparations: 1. 10 mins: Try to formulate a “why” question, and question the respondent’s answer by asking another “why” question for 5 consecutive times, or until you can no longer get closer to the root cause
Capture root cause, not symptoms