What is the five whys
The five whys is a lean tool used to ascertain the root cause. It’s a simple technique that asks why something is done the way it is, another why is asked of the response. Why is asked a number of times (notionally five) to drill down through the process and capture the root cause.
Five whys has a number of different benefits for example
• Its simple to do
• It doesn’t require specialist training
• It ensures that the process being reviewed cant be taken for granted
• Process steps have to be defended with facts in order to preserve them.
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