Unease on this score is increased with the reflection that what qualifies a person as able or disabled (or for that matter as talented or untalented) is not simply a function of her natural attributes but is rather a function of the mesh between her natural attributes and the traits that are valued by people given the organization of society (Buchanan et al. 2000: chapter 3 and 7; Wikler 1983). In a complex technological society, individuals are excluded from participation in its main activities who would be included in a different form of society. A person who could manage an ox cart might be unable to drive a car and hence significantly handicapped in a social order that relies on transportation by car. A person who could carry out valuable tasks in a hunter-gatherer society might be incapable of sophisticated mathematical and literacy skills required in a complex modern economy. The question then arises, to what extent must society be organized so that all of its members are able to participate as full members in the activities that constitute a decent life in the society?