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Green Belt and Black Belt, and for that matter Yellow Belt and Master Black Belt are all recognized levels of competence around problem solving skills. These terms have been in use since the mid ’80s so their recognition is fairly…
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Elisabeth Swan

Elisabeth is a Master Black Belt at GoLeanSixSigma.com, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 30 years, she's helped leading organizations like Amazon, Charles Schwab and Marriott International, Inc. build problem-solving muscles with Lean Six Sigma to achieve their goals.
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