 Most arguments for MMR are based on DMR and the contention that it is implausible to suppose fundamental moral disagreements can always be resolved rationally (for overviews of these arguments, see Plakias 2020 and Seipel 2020b). Sometimes it is said that some moral disagreements are faultless, meaning that neither party has made a mistake (see Kölbel 2004). For instance, Harman (1996), Prinz (2007) and Wong (1984 and 2006) have all stressed the importance of moral disagreements in arguing for MMR, and such arguments will be considered in some detail in subsequent sections. However, some arguments for MMR have a rather different approach, and two of these should be noted here.