 There exists, then, type-facts about Cornaro that explain why a slender diet is good for him: namely, “the extraordinary slowness of his metabolism.” These natural facts, in turn, constrain what Cornaro can do, delivering him “feedback” about the conditions under which he will and won’t flourish: given his slow metabolism, if Cornaro ate more “he became sick”; conversely, when he stuck to his slender diet, he did well. In sum, “[h]e was not free to eat little or much.” Cornaro’s mistake consists, in effect, in his absolutism: he thought the “good” diet was good for everyone, when in fact it was only good for certain types of bodies (namely, those with slow metabolisms). As with diets, so too with moralities, according to Nietzsche. Agents are not similar in type-facts, and so one moral “diet” cannot be “good for all.” As he writes: