When conducting a Root Cause Analysis using 'The Five Whys', what is the specific objective of the final 'why'?

Prosper Eromonsele

“the specific objective of the final why in a five whys analysis is to identify a systemic process failure that can be permanently corrected. a root cause is defined as the fundamental breakdown in a process or system that, if addressed. prevents the problem from recurring. the final why must lead to a point where a control mechanism or policy can be implemented to eliminate the underlying cause. if the answer to the final why is simply human error or a statement of fact without a corresponding process-based solution, the analysis has not yet reached the root cause. for example, if a machine stops because a fuse blew, asking why again leads to the discovery that the circuit was overloaded, and a further why reveals a lack of regular electrical inspections. the final objective is to identify that lack of inspection, which is a process gap, rather than stopping at the broken fuse, which is merely a symptom.”

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Kayla Miller

“identify a systemic process failure”

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