In A Theory of Justice, Rawls acknowledged that rational choice behind the veil of ignorance would generally yield average utilitarianism—John Harsanyi’s conclusion fifteen years earlier. The question is, why would it yield a different conclusion in the Original Position? If, as Rawls assumed, the representative person would be infinitely risk averse in those unique circumstances, utility functions would reflect that preference in the relative weights assigned to different outcomes, yielding Rawls’s maximin solution. In short, Rawls’s disagreement with utilitarians is an empirical dispute about individual preferences and nothing more. Rawls believed the disagreement was more fundamental, because of two erroneous assumptions about standard utility functions: that they reflect peoples’ psychological attitudes toward risk-taking rather than their preferences over a range of outcomes, that they would ignore the transitory disutility of uncertainty aversion in calculating expected utilities.