 A third alternative version of the earlier argument might (in 4) invoke a principle assuring equal opportunity for welfare or advantage (Arneson 1988; Cohen 1989), a view that later came to be called “luck egalitarianism.” Arguably, such a principle would also support a universal access system that included a broad range of preventive and treatment services. This particular principle, however, will differ in terms of what is covered from the opportunity-based account described earlier for it more explicitly leaves room to exclude coverage for conditions for which an individual is substantively responsible. It says we do not owe each other assistance or compensation for bad “option” luck in the way we do for bad “brute” luck. At the same time, it might include access to services that correct for some disadvantages (e.g. lower manual dexterity or lower intelligence) that might be considered normal functioning by the account sketched earlier. Still, this is a universal access system, even if it excludes coverage for conditions for which society holds individuals responsible (see Daniels 2011). Nevertheless, some luck egalitarians reject the appeal to opportunity proposed in the account sketched here (Segall 2010).