The 5 why's typically refers to the practice of asking, five times, why the failure has occurred in order to get to the root cause/causes of the problem. There can be more than one cause to a problem as well. In an organizational context, generally root cause analysis is carried out by a team of persons related to the problem. No special technique is required.
The Washington Monument was disintegrating
- Why? Use of harsh chemicals
- Why? To clean pigeon poop
- Why so many pigeons? They eat spiders and there are a lot of spiders at monument
- Why so many spiders? They eat gnats and lots of gnats at monument
- Why so many gnats? They are attracted to the light at dusk.
- Solution: Turn on the lights at a later time.
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