Amy Bell is an expert on investing and personal finance as well as the founder of WritePunch Inc. Amy has 15+ years of experience as a professional journalist, copywriter, and ghostwriter. She ...

J.B. Maverick is an active trader, commodity futures broker, and stock market analyst 17+ years of experience, in addition to 10+ years of experience as a finance writer and book editor. Charlene ...

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Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.