Not helpful if you get the wrong answer to your first why question. There were pro and cons of this whys technique. You can have many possible answers to your first why question.
...which can be solved by following each, "why,?" with its complementary question, "...and how do we know?" The informed user is best to focus on the critical few, not the many possible.
This a maybe the best video I have seen on root cause analysis
Not helpful if you get the wrong answer to your first why question. There were pro and cons of this whys technique. You can have many possible answers to your first why question.
...which can be solved by following each, "why,?" with its complementary question, "...and how do we know?" The informed user is best to focus on the critical few, not the many possible.
isn't it what he is saying?
Great teacher.
It was a good video
Great!
How do you know you found the root cause though?
great question! with trial and error...continuous evaluation, tracking results, adjusting as necessary. :}