 An extensive scientific literature indicates that developing expert skill requires extensive preparation, whether the practitioner is a novelist, doctor, or chess master—around 10,000 hours of “deliberate practice”, according to a popular generalization (Ericsson 2014; Ericsson et al. 1993). The “10,000–hour rule” is likely an oversimplification, but there is no doubt that attaining expertise requires intensive training. Because of this, people rarely achieve eminence in more than one area; for instance, “baseball trivia” experts display superior recall for baseball-related material, but not for non-baseball material (Chiesi et al. 1979). Conversely, becoming expert at morality, or (even more ambitiously) expert at the whole of life, would apparently require a highly generalized form of expertise: to be good, there’s a lot to be good at. Moreover, it’s quite unclear what deliberate practice at life involves; how exactly does one get better at being good? 