Business Model Engineering Ries Six Sigma 
Harvard Business Review
MAY 13, 2014
Under CEO Jack Welch in the 1980s and 1990s, they adopted operational efficiency approaches (“ Workout ,” “Six Sigma,” and “Lean”) that reinforced their success and that many companies emulated. In 2009, GE’s transportation unit developed a new sodium battery for a hybrid engine for locomotives.
Harvard Business Review
APRIL 27, 2015
By comparison, think of the long strides many businesses have made in reengineering their supply chains, boosting product quality, and rolling out lean six sigma. The engine may be otherwise well built, but without just one of these components, it will be essentially worthless. A car is more than its engine.
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