Here is what a consultant recently wrote in a blog article that was republished on LinkedIn:

“The 5 WHY analysis is a simple and very effective technique.”

What do I think about 5 Whys? It is simple but it is NOT effective. Proof of the lack of effectiveness is all over the place. See these articles to find out just some of what I’ve written about the effectiveness of 5 Whys in the past:

 An Example of 5 Whys – Is this Root Cause Analysis? Let Me Know Your Thoughts…

What’s Fundamentally Wrong with 5-Whys?

Teruyuki Minoura (Toyota Exec) Talks About Problems with 5-Whys

Under Scrutiny (page 32)

If your root cause analysis is having problems, don’t double down on 5 whys by asking more whys. The problem is the root cause analysis system (5 Whys) and not your ability to ask why effectively.

The problem is that the techniques wasn’t designed with human capabilities and limitations in mind.

What system was developed with a human factors perspective? The TapRooT® Root Cause Analysis System. Read more about how TapRooT® was designed here:

http://www.taproot.com/products-services/about-taproot

Or get the book that explains how TapRooT® can help your leadership improve performance:

TapRooT® Root Cause Analysis Leadership Lessons