Quando algo dá errado, especialmente em uma grande organização, pode haver um instinto para apontar os dedos e mudar a culpa. Isso provavelmente não é a melhor maneira de evitar que o problema surja no futuro. Sakichi Toyoda, o fundador da Toyota Motor Company, desenvolveu o processo "5 Whys", um tipo de análise de causa raiz, para identificar e corrigir problemas que surgiram dentro da empresa. Desde então tem sido amplamente adotado como parte da fabricação enxuta, Kaizen e metodologia Six Sigma.
Root Cause Analysis - 5 whys - Five Whys - Genchi Genbutsu philosophy
Texto do Storyboard
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Gary has noticed the widgets coming through his station are defective.
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Gary reports the problem to his boss, and they decide to perform a quick 5 Whys analysis, along with a couple of Gary's co-workers.
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Widgeter Mk. II
The team articulates the problem and builds a linked chain of causation back to the root cause: the secondary widget punchers aren't being cleaned enough.
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The team uses Storyboard That to map out a new protocol for widget puncher maintenance that is easy to understand and follow.
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Gary's boss uses the storyboard as part of her report to upper management, reassuring them that the source of the defects has been eliminated.
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There are no more defective widgets! The manufacturing process has been improved, and everyone is ready to get back to making the product.