jcatcw writes "Thornton May is mystified by the very small number of Fortune 500 companies that led by former CIOs. "Knowing what we know about CIOs — that is, that most are smart, hardworking, supremely aware of how the business works and increasingly savvy regarding the workings of external customers' minds — the failure of more CIOs to become CEO has to be one of the biggest mysteries of our age.""
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