the view presented, the acceptance of justice and the acknowledgment of the duty of fair play depends in every day life solely on there being a de facto balance of forces between the parties. It would indeed be foolish to underestimate the importance of such a balance in securing justice; but it is not the only basis thereof. The recognition of one another as persons with similar interests and capacities engaged in a [72]common practice must, failing a special explanation, show itself in the acceptance of the principles of justice and the acknowledgment of the duty of fair play.
The conception at which we have arrived, then, is that the principles of justice may be thought of as arising once the constraints of having a morality are imposed upon rational and mutually self-interested parties who are related and situated in a special way. A practice is just if it is in accordance with the principles which all who participate in it might reasonably be expected to propose or to acknowledge before one another when they are similarly circumstanced and required to make a firm commitment in advance without knowledge of what will be their peculiar condition, and thus when it meets standards which the parties could accept as fair should occasion arise for them to debate its merits. Regarding the participants themselves, once persons knowingly engage in a practice which they acknowledge to be fair and accept the benefits of doing so, they are bound by the duty of fair play to follow the rules when it comes their turn to do so, and this implies a limitation on their pursuit of self-interest in particular cases.
Now one consequence of this conception is that, where it applies, there is no moral value in the satisfaction of a claim incompatible with it. Such a claim violates the [74]conditions of [184] reciprocity and community amongst persons, and he who presses it, not being willing to acknowledge it when pressed by another, has no grounds for complaint when it is denied; whereas he against whom it is pressed can complain. As it cannot be mutually acknowledged it is a resort to coercion; granting the claim is possible only if one party can compel acceptance of what the other will not admit. But it makes no sense to concede claims the denial of which cannot be complained of in preference to claims the denial of which can be objected to. Thus in deciding on the justice of a practice it is not enough to ascertain that it answers to wants and interests in the fullest and most effective manner. For if any of these conflict with justice, they should not be counted, as their satisfaction is no reason at all for having a practice. It would be irrelevant to say, even if true, that it resulted in the greatest satisfaction of desire. In tallying up the merits of a practice one must toss out the satisfaction of interests the claims of which are incompatible with the principles of justice.
6. The discussion so far has been excessively abstract. While this is perhaps unavoidable, I should now like to [76]bring out some of the features of the conception of justice as fairness by comparing it with the conception of justice in classical utilitarianism as represented by Bentham and Sidgwick, and its counterpart in welfare economics. This conception assimilates justice to benevolence and the latter in turn to the most efficient design of institutions to promote the general welfare. Justice is a kind of efficiency.17 [185]
[78]Now it is said occasionally that this form of utilitarianism puts no restrictions on what might be a just assignment of rights and duties in that there might be circumstances which, on utilitarian grounds, would justify institutions highly offensive to our ordinary sense of justice. But the classical utilitarian conception is not totally unprepared for this objection. Beginning with the notion that the general happiness can be represented by a social utility function consisting of a sum of individual utility functions with identical weights (this being the meaning of the maxim that each counts for one and no more than one),18 it is commonly assumed that the utility functions of individuals are similar in all essential respects. Differences between [80]individuals are ascribed to accidents of education and upbringing, and they should not be taken into account. This assumption, coupled with that of diminishing marginal utility, results in a prima facie case for equality, e.g., of equality in the distribution of income during any given period of time, laying aside indirect effects on the future. But even if utilitarianism is interpreted as having such restrictions built into the utility function, and even if it is supposed that these restrictions have in practice much the same result as the application of the principles of justice (and appear, perhaps, to be ways of expressing these principles in the language of mathematics and psychology), the fundamental idea is very different from the conception of justice as fairness. For one thing, [186] that the principles of justice should be accepted is interpreted as the contingent result of a higher order administrative decision. The form of this decision is regarded as being similar to that of an entrepreneur deciding how much to produce of this or that commodity in view of its marginal revenue, or to that of someone distributing goods to needy persons according to the relative urgency of their wants. The choice between practices is thought of as being made on the basis of the allocation of benefits and burdens to individuals (these being measured by the present capitalized value of their utility over the full [82]period of the practice’s existence), which results from the distribution of rights and duties established by a practice.
Moreover, the individuals receiving these benefits are not conceived as being related in any way: they represent so many different directions in which limited resources may be allocated. The value of assigning resources to one direction rather than another depends solely on the preferences and interests of individuals as individuals. The satisfaction of desire has its value irrespective of the moral relations between persons, say as members of a joint undertaking, and of the claims which, in the name of these interests, they are prepared to make on one another;19 [187] and it is this value which is to be taken into account by the (ideal) legislator [84]who is conceived as adjusting the rules of the system from the center so as to maximize the value of the social utility function.
It is thought that the principles of justice will not be violated by a legal system so conceived provided these executive decisions are correctly made. In this fact the principles of justice are said to have their derivation and explanation; they simply express the most important general features of social institutions in which the administrative problem is solved in the best way. These principles have, indeed, a special urgency because, given the facts of human nature, [86]so much depends on them; and this explains the peculiar quality of the moral feelings associated with justice.20 This assimilation of justice to a higher order executive decision, certainly a striking conception, is central to classical utilitarianism; and it also brings out its profound individualism, in one sense of this ambiguous word. It regards persons as so many separate directions in which benefits and burdens may be assigned; and the value of the satisfaction or dissatisfaction of desire is not thought to depend in any way on the moral relations in which individuals stand, or on the kinds of claims which they are willing, in the pursuit of their interests, to press on each other.
7. Many social decisions are, of course, of an administrative nature. Certainly this is so when it is a matter of social utility in what one may call its ordinary sense: that is, when it is a question of the efficient design of social institutions for the use of common means to achieve common ends. In this case either the benefits and burdens may be assumed to be impartially distributed, or the question of distribution is misplaced, as in the instance of maintaining public order and security or national defense. But as an interpretation of the basis of the principles of justice, classical [188] [88]utilitarianism is mistaken. It permits one to argue, for example, that slavery is unjust on the grounds that the advantages to the slaveholder as slaveholder do not counterbalance the disadvantages to the slave and to society at large burdened by a comparatively inefficient system of labor. Now the conception of justice as fairness, when applied to the practice of slavery with its offices of slaveholder and slave, would not allow one to consider the advantages of the slaveholder in the first place. As that office is not in accordance with principles which could be mutually acknowledged, the gains accruing to the slaveholder, assuming them to exist, cannot be counted as in any way mitigating the injustice of the practice. The question whether these gains outweigh the disadvantages to the slave and to society cannot arise, since in considering the justice of slavery these gains have no weight at all which requires that they be overridden. Where the conception of justice as fairness applies, slavery is always unjust.
I am not, of course, suggesting the absurdity that the classical utilitarians approved of slavery. I am only rejecting a type of argument which their view allows them to use in support of