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Dr. Genichi Taguchi was in Columbus recently to conduct a seminar. He talked about how things really work, and why things don't work.
For more than 40 years, Dr. Taguchi has looked at highly complex, yet common, problems in the business world. He has analyzed problems for their essential elements and then created tools to solve them.
The most famous of his insightful tools is the Taguchi Loss Function, which, for example, measures economic losses related to under-delivering or over-delivering on customer expectations in service businesses, and for being off "spec" in manufacturing.
Dr. Taguchi and his colleague, Alan Wu, presented an interesting …