Sometimes I don't agree with Daniel Lemire at all - this post on the culture of envy, for example, is wrong in so many ways - but in this post he nails it. Expertise isn't simply inherited, and isn't acquired overnight; while it does require some predisposition, it is primarily the result of practice, and not just any practice, but reasonably guided and reflective practice. "As far as we know," he writes, "if you are a world-class surgeon or programmer, you have had to work hard for many years." Results are not guaranteed; this is a necessary condition, not a sufficient condition.
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