David Brooks says that we overestimate the extent to which genius is the product of genetic hard-wiring. “What Mozart had, we now believe, was the same thing Tiger Woods had — the ability to focus for long periods of time and a father intent onimproving his skills. . . . The primary trait [the wunderkind] possesses is not some mysterious genius. It’s the ability to develop a deliberate, strenuous and boring practice routine.” Even assuming that this account is true–and I’m dubious about that–isn’t it possible that this “ability to focus” is itself strongly influenced by genes?