 In chapter 21 of On What Matters, Parfit presents further arguments that can be deployed against the individualist restriction—which limits the grounds for rejecting a principle to its implications for single people. First, Parfit presents a series of cases where, he argues, “any contractualism that incorporates the individualist restriction must conflict with all plausible views about the distribution of benefits and burdens” (Parfit 2011, volume 2, p. 198). One representative case is the following (Parfit 2011, volume 2, pp. 199–200):