 A potentially more substantive reason to prefer  (CMB)  over  (RI)  is that it may be needed to account for cases such as metaphysical coherentism, where loops of dependence are possible (see Bliss 2014, 2018; Barnes 2018; Morganti 2018; Nolan 2018; and Thompson 2018). It should be emphasized that this view violates asymmetry and hence drops the idea that the structure of reality is hierarchical. While this requires abandoning one of the key tasks that the notion of fundamentality is often thought to have, it does help in accommodating the idea that we should adopt a more holistic approach whereby entities can be mutually related and form loops or cycles. Sometimes an analogy from epistemology is offered, as these loops of dependence could resemble a Quinean web of belief, so that each entity depends on one or more other entities. Perhaps the most plausible example of the possibility of loops of dependence comes from  ontic structural realism  (OSR). (OSR) suggests that objects may be reduced to—or more moderately, are ontologically on a par rather than prior to—relational structures. If (OSR) is true, we might have to revise our views about what the fundamentalia could be, as they might be relations rather than objects (for discussion on OSR and fundamentality, see Wolff 2012; McKenzie 2014; Morganti 2018; Tahko 2018). What exactly happens to (CMB) on this type of view depends on the details of the coherentist framework, but one possibility—on a moderate understanding of (OSR)—is that the fundamentalia would include mutually dependent relations and objects, which then determine everything else. Metaphysical coherentism remains one of the least explored areas in contemporary literature, but future research may solidify its position among the possible options.