The venerable business case study method got its start in 1921 at the Harvard Business School. The method became standard at the school throughout the 1920’s and since then Harvard has a near-monopoly grip on the business, selling its cases to over 4,000 rival schools. 

Cases can be useful and informative, but recognize that they aren’t reality. The companies featured typically require that the case writer submit the case to them for approval. That introduces survivor bias—whoever is still around at the time of publication gets to dictate how the narrative is told. Another issue is that the companies selected........

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