 (d) Proposal (d) involves a form of rule consequentialism that, rather than struggling to avoid, simply exploits two naïve mistakes that many people may well make when they first begin to think about their obligations in respect of future people. The first is the mistake of thinking that the population produced when, for example, agents choose conservation will be identical, at least in part, to the population produced when agents instead choose depletion. The second is the person-based intuition itself – the idea that an act that makes things worse for no existing or future person cannot be wrong. Tim Mulgan suggests that the “ideal code” – the code whose internalization by most of a given society will maximize wellbeing on an aggregate basis – will incorporate both these mistakes. They are both, after all, easily and efficiently “taught” since (Mulgan thinks) we are prone to make them in any case and they in effect cancel each other out. Because the ideal code is violated by the depletion choice and the 14-year-old girl’s choice to have a child, both are declared wrong (Mulgan 2006, 155–56 and 204; Mulgan 2009).