A related objection to rule-consequentialism is that rule-consequentialism makes the justification of familiar rules contingent on various empirical facts, such as what human nature is like, and how many people there are in need or in positions to help. The objection to rule-consequentialism is that some familiar moral rules are necessarily, not merely contingently, justified (McNaughton and Rawling 1998; Gaut 1999, 2002; Montague 2000; Suikkanen 2008). A sibling of this objection is that rule-consequentialism makes the justification of rules depend on the wrong facts (Arneson 2005; Portmore 2009). Again, debate about whether the theory does point to the wrong facts continues (see Woollard 2015, esp. pp. 185–86, 203–205).