What is 5 Why's - 2024 Edition

The 5 Whys technique, used in Lean and Six Sigma, involves asking "Why?" five times to find a problem's root cause.
It prevents recurrence by addressing the root cause, enhancing process reliability and efficiency.
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✍ Here is the transcript of the video
The 5 Whys is a problem-solving technique used in the Lean and Six Sigma methodologies to identify the root cause of a problem.
It involves asking the question "Why?" five times to drill down from the symptoms of a problem to its underlying cause.
▶ The goal of 5 why's
The goal is to prevent the problem from recurring by addressing its root cause, rather than just treating the symptoms.
The process begins with a problem statement.
For example, "The machine is not working." The first "Why?" might be, "Why is the machine not working?" The answer could be, "Because it has jammed." This leads to the second "Why?" - "Why has it jammed?" The process continues until the root cause is identified.
The 5 Whys technique is simple and easy to use, but it requires a disciplined approach to ensure that the root cause is accurately identified and addressed.
It's important to avoid assumptions and to base each "Why?" on the facts of the situation.
▶ 5 Whys and Continuous Improvement
The 5 Whys is a powerful tool for promoting continuous improvement in manufacturing processes.
By identifying and addressing the root causes of problems, it helps to prevent those problems from recurring, leading to more reliable and efficient processes.
However, it's important to note that the 5 Whys is not a standalone tool.
It should be used as part of a broader problem-solving and process improvement strategy, in conjunction with other Lean and Six Sigma tools and techniques.
▶ Conclusions
In conclusion, the 5 Whys is a simple yet powerful tool for identifying the root cause of a problem and preventing its recurrence, thereby improving the reliability and efficiency of manufacturing processes.
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