Social cooperation can be dened as (a) coordination between individuals in which (b)
each shows proper regard to the interests of the other.
22
An analysis of both of these conditions
will show why some practices will be necessary for social cooperation to be possible. First, what
makes coordination possible is that there are mutually recognized rules that appropriately
structure each agent’s expectations. It is because persons have a basis for forming expectations
of others that make it possible for each to rely on the behavior of others for their plans and thus
coordinate with them.
23
e rules of social practices are the basis of these appropriate
expectations. As such, social practices make social cooperation possible by forming the basis
for the expectations necessary in order to coordinate actions with one another. Second, what
makes proper regard for each other’s interest possible is the mutual trust that social practices
are mutually advantageous. It must be the case that by coordinating my actions in accordance
with appropriate institutions, we are both better o than if I did not do so. If we had a strict
conict of interests, there could be no possible social cooperation.
24
As such, what makes social
cooperation possible is that there exist mutually recognized systems of rules that each cooperator
trusts to advance their own interests.
Now, in society there is not merely social cooperation, but social cooperation amongst
strangers.
25
is presents an additional problem because persons must trust that cooperation
e Principle of Fairness, Legal Obligation and the Value of Choice
- 14 -
22
Rawls articulates social cooperation as involving three features (a) coordination guided by publicly recognized
rules that are seen by those who follow them as properly regulating their action, (b) the rules are reasonably
acceptable to the cooperators and (c) reference to a conception of each participant’s good (“Justice as Fairness:
Political not Metaphysical” p. 396-97). In my denition above, I aim to respect these three conditions without
presupposing that the proper consideration to others interests involves mutually acceptable rules based on a
shared conception of a individual’s good. I ultimately agree with Rawls but such a claim is unnecessarily
contentious for present purposes. Also, what “proper” regard consists in will surely be open to interpretation
according to dierent ethical theories as I cannot here defend a substantive view on the issue here.
23
Here I mean to draw on a long tradition of literature that extends from David Lewis (Convention: A Philosophical
Study, Oxford, UK; Blackwell, 2002) through to Cristina Bicchieri (e Grammar of Society, Cambridge, UK;
Cambridge University Press, 2006) and on. e debt to Hume is not lost on these theorists.
24
For more on this point, see Rawls, eory of Justice, §22
25
For more on this idea, see Paul Seabright’s book In the Company of Strangers; A Natural History of Economic Life
(Princeton, NJ; Princeton University Press, 2010).