What do Mark Twain, Ernest Hemingway, and return-on-investment (ROI) have in common? All have been reported dead, prematurely. Twain was quite resilient, and reporting was so inaccurate in the 19th century that he was reported deceased twice! Almost a century later, reporting was no better: Hemingway was widely reported dead after a single plane crash in Africa, when in fact he was involved in two separate plane accidents and survived both.
Today, a general misunderstanding about measurement, r
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