Published online by Cambridge University Press: 01 January 2020
A convention is a regularity in behavior, sustained by a system of preferences and expectations, that has a possible alternative: so claims David Lewis. That it is not, is what I hope to show.
In Convention; A Philosophical Study, Lewis gives an analysis of what he hopes is “our common, established concept of convention.” In developing his analysis, Lewis extensively employs the technical vocabulary of game theory. According to Lewis conventions are established by “populations” in order to solve recurring “coordination problems.” Lewis gives eleven examples of “coordination problems” which he claims are solved by convention. One example is the following:
Suppose several of us are driving on the same winding two-lane roads. It matters little to anyone whether he drives in the left or the right lane, provided the others do likewise. But if some drive in the left lane and some in the right, everyone is in danger of collision.
* I am greatly indebted to Paul Ziff for his criticism and encouragement.
1 (Cambridge, 1969).
2 Ibid., p. 3.
3 The following expressions figure prominently in Convention, and are drawn either from Neumann, von and Morgenstern's, Theory of Games and Economic Behavior (Princeton, 1953, second edition)Google Scholar, or Schelling's, T. C. The Strategy of Conflict (New York, 1960)Google Scholar; ‘coordination', ‘expectation', ‘equilibrium point’, ‘interdependent decision', ‘alternative, ‘equilibrium', 'preference', and ‘strategy'.
4 Ibid., p. 6.
5 Ibid., p. 78.
6 36 Stat. 2259.
7 For evidence for this claim see H. Levie, “Some Major Inadequacies in the Existing law Relating to the Protection of Individuals During Armed Conflict,” and “Statement of Professor Levie,” in Carey, J. (ed.), When Battle Rages, How Can Law Protect? (Dobbs Ferry, N. Y., 1971).Google Scholar
8 Lewis, op. cit., p. 29.Google Scholar
9 Ibid., p. 28.
10 Ibid., p. 7 and pp. 48–49.
11 Skinner, B. F. Walden II (Toronto, 1961).Google Scholar
12 See Gough, K. “Nayar: Central Kerala,” in Gough, K. and Schneider, D. (eds.), Matrilineal Kinship (Berkeley, 1961).Google Scholar
13 Lewis, op. cit., p. 70.Google Scholar
14 The following two paragraphs were prompted by comments on an early draft of this paper by Richard Grandy, Stanley Munsat, and Michael Resnik.