One reason there are so many ...

One reason there are so many short-lived management fads is that their prescriptions were derived and advocated in precisely this way. So managers read about a fad and try it, find that it doesn't work, abandon the effort, and move on to the next thing. In reality, it is usually the case that the faddish prescription was indeed sound advice in certain circumstances, but actually was poor advice in other circumstances.
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 Clayton Christensen

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When product performance outstrips the ability of customers to use that performance in an industry, the competitive game changes. Under those circumstances you have to decouple components businesses from assembly businesses.
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 Clayton Christensen
Because of the disruption phenomenon - technological progress outstripping the ability of customers to utilize it - the general tendency is for the money to migrate toward the subsystems.
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 Clayton Christensen
Most companies think of disruption as a threat. But disruptive innovations have tremendous growth potential. If incumbent companies can learn how to harness the forces of disruption, they too can improve their ability to create new-growth businesses.
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 Clayton Christensen
Motivation is the catalyzing ingredient for every successful innovation. The same is true for learning.
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 Clayton Christensen
My conclusion: Management is the most noble of professions if it's practiced well. No other occupation offers as many ways to help others learn and grow, take responsibility and be recognized for achievement, and contribute to the success of a team.
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 Clayton Christensen