Scholars such as
H. L. A. Hart,
John Rawls,
Ronald Dworkin, and
Steven Lukes have variously embellished Gallie's proposal by arguing that certain of the difficulties encountered with Gallie's proposition may be due to the unintended
conflation of two separate domains associated with the term
concept: • the
concepts (the abstract, ideal
notions themselves), and • the
conceptions (the particular
instantiations, or
realizations of those ideal and abstract notions). In essence, Hart (1961), Rawls (1971), Dworkin (1972), and Lukes (1974) distinguished between the "unity" of a notion and the "multiplicity" of its possible instantiations. From their work it is easy to understand the issue as one of determining whether there is a single notion that has a number of different instantiations, or whether there is more than one notion, each of which is reflected in a different
usage. In a section of his 1972 article in
The New York Review of Books, Dworkin used the example of "fairness" to isolate and elaborate the difference between a
concept (
suum cuique) and its
conception (various instantiations, for example
utilitarian ethics). He supposes that he has instructed his children not to treat others "unfairly" and asks us to recognize that, whilst he would have undoubtedly had particular "examples" (of the sorts of conduct he was intending to discourage) in mind at the time he spoke to his children, whatever it was that he
meant when he issued such instructions was not confined to those "examples" alone, for two reasons: • "I would expect my children to apply my instructions to situations I had not and could not have thought about." • "I stand ready to admit that some particular act I had thought was fair when I spoke was in fact unfair, or vice versa, if one of my children is able to convince me of that later." Dworkin argues that this admission of error would not entail any "change" to his original instructions, because the true
meaning of his instructions was that "[he] meant the family to be guided by the
concept of fairness, not by any specific
conception of fairness [that he] might have had in mind". Therefore, he argues, his instructions do, in fact, "cover" this new case. Exploring what he considers to be the "crucial distinction" between the overall
concept of "fairness" and some particular, and specific
conception of "fairness", he asks us to imagine a group whose members share the view that certain acts are
unfair. The members of this group "agree on a great number of standard cases of unfairness and use these as benchmarks against which to test other, more controversial cases". In these circumstances, says Dworkin, "the group has a
concept of unfairness, and its members may appeal to that concept in moral instruction or argument." However, the members may still disagree over many of these "controversial cases"; and differences of this sort indicate that members
have, or
act upon, entirely different theories of why and how each of the "standard cases" are, in fact, genuine acts of "unfairness". And, because each considers that certain principles "[which] must be relied upon to show that a particular division or attribution is unfair" are more "fundamental" than certain other principles, it can be said that members of the group have different
conceptions of "fairness". Consequently, those responsible for giving "instructions", and those responsible for setting "standards" of "fairness", in this community may be doing one of two things: • Appealing to the
concept of "fairness", by demanding that others act "fairly". In this case, those instructed to act "fairly" are responsible for "developing and applying their own conception of fairness as controversial cases arise". Each of those issuing the instructions (or setting the standards) may have quite different explanations underlying their actions; and, also, they may well change their explanations from time to time, without ever changing the standards they set. • Laying down a particular
conception of "fairness"; by, for example, specifying that all hard cases were to be decided "by applying the
utilitarian ethics of
Jeremy Bentham". It is important to recognize that rather than it just being a case of delivering two different instructions; it is a case of delivering two different
kinds of instruction: • In the case of the appeal to the
concept of "fairness", one invokes the ideal (and, implicitly, the universally agreed upon) notion of "fairness"; and whatever one might believe is the best
instantiation of that notion is, by and large, irrelevant. • In the case of laying down a
conception of "fairness", one specifies what one believes to be the best instantiation of the notion "fairness"; and, by this action, one specifies what one
means by "fairness"; and whatever one might believe is the ideal
notion of "fairness" is, by and large, irrelevant. As a consequence, according to Dworkin, whenever an appeal is made to "fairness", a moral issue is raised; and, whenever a conception of "fairness" is laid down, an attempt is being made to answer that moral issue. ==Not "hotly disputed" concepts==