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By Rich Burnham

During the 1920s, a British statistician named Ronald Fisher put the finishing touches on a method for making breakthrough discoveries. Some 70 years later, Fisher's method, now known as design of experiments, has become a powerful software tool for engineers and researchers.

But why did it take engineers so long to begin using DOE for innovative problem solving? After all, they were ignoring a technique that would have produced successes similar to the following modern-day examples:

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By Brenda Boughton

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By Quality Digest


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By Quality Digest


Download directory


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By Kicab Castaneda-Mendez

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By Bretta Kelly

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By Craig Cochran

A few years ago, we had a mysterious scratching sound in our attic. My 5-year-old daughter was terrified, and everybody’s sleep was being interrupted on a nightly basis.

“We need to do something about the noise in our attic,” I told my daughter.

“No!” she cried. “Don’t go into the attic. It’s too scary.”