 It is in the minimal sense above that all should agree with the claim that metaphysical explanation is a form of non-causal explanation (see Schaffer 2017: 303). Nonetheless, one must take care here in at least three ways. First, metaphysical explanation should not be identified with non-causal explanation. After all, there are arguably many other forms of explanation besides metaphysical explanation that are non-causal; we mentioned mathematical explanation above. But this is not to say that metaphysical explanation has no role to play in how to understand these other types of non-metaphysical non-causal explanations. Take, for example, Steiner’s pioneering work on mathematical explanation, which starts with the thought that “to explain the behavior of an entity, one deduces the behavior from the essence or nature of the entity” (Steiner 1978: 143). To the extent this works in the way (3) above works, by invoking the notion of essence, to that extent mathematical explanation involves a form of metaphysical explanation.