 The first thing to notice here is that well-foundedness is relativized to a giver order, a given relation of dependence, just like  (RI)  in  section 1.2.  So, strictly speaking, we ought to specify which relation we have in mind and consider the various complications that this introduces, which we discussed in  section 1.  However, much of the literature on well-foundedness (although not all of it) focuses on grounding, and for purposes of exposition it is easiest to focus on this literature, also assuming that grounding establishes an absolute order of priority.