 The primary social obligation is to assure everyone access to a tier of services that effectively promotes normal functioning and thus protects equality of opportunity. Since health care is not the only important good, resources to be invested in the basic tier are appropriately and reasonably limited, for example, by democratic decisions about how much to invest in education or job training as opposed to health care. Because of their very high “opportunity costs,” there will be some beneficial medical services that it will be reasonable not to provide in the basic tier, or to provide only on a limited basis, for example, with queuing. To say that these services have “high opportunity costs” means that providing them consumes resources that would produce greater health benefits and protect opportunity more if used in other ways.