 In the preface to the sixth edition of The Methods of Ethics (1901), Sidgwick writes that as he became increasingly aware of the shortcomings of utilitarian calculation, he became ever more sensitive to the utilitarian efficacy of common sense “on the ground of the general presumption which evolution afforded that moral sentiments and opinions would point to conduct conducive to general happiness…” (Sidgwick, 1907: xxiii). In other words, common sense morality is a generally reliable, right-making decision procedure because social evolution has privileged the emergence of general happiness-generating moral sentiments. And whenever common sense fails us with conflicting or foggy guidance, we have little choice but to engage in order-restoring, utilitarian calculation. The latter works hand-in-glove with the former, forever refining and systematizing it.