 All the above conditions occur more or less widely in the literature (see Crupi, Chater, and Tentori 2013 and Crupi and Tentori 2016 for references and discussion). Interestingly, they’re all pairwise incompatible on the background of the Formality and the Final Probability principles (P0 and P1 above). Indeed, they sort out the relevance notion of confirmation into three distinct, classical families of measures, as follows (Crupi, Chater, and Tentori 2013; Crupi and Tentori 2016; Heckerman 1988; Sprenger and Hartmann 2020, Ch. 1):