Some other objections try to show that, given the theory’s criterion for selecting rules, there are conditions under which it selects intuitively unacceptable rules. For example, Tom Carson (1991) argued that rule-consequentialism turns out to be extremely demanding in the real world. Mulgan (2001, esp. ch. 3) agreed with Carson about that, and went on to argue that, even if rule-consequentialism’s implications in the actual world are fine, the theory has counterintuitive implications in possible worlds. If Mulgan were right about that, this would cast doubt on rule-consequentialism’s claim to explain why certain demands are appropriate in the actual world. Debate about such matters continues (Hooker 2003; Lawlor 2004; Woollard 2015: 181–205). And Mulgan has become a developer of the theory rather than a critic (Mulgan 2006, 2009, and 2015).