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MAJORITIES AGAINST UTILITY: IMPLICATIONS OF THE FAILURE OF THE MIRACLE OF AGGREGATION

Published online by Cambridge University Press:  24 November 2008

Bryan Caplan
Bryan Caplan
Affiliation:
Economics, George Mason University
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Abstract

A surprising conclusion of modern political economy is that democracies with highly ignorant voters can still deliver very good results as long as voters' errors balance each other out. This result is known as the Miracle of Aggregation. This paper begins by reviewing a large body of evidence against this Miracle. Empirically, voters' errors tend to be systematic; they compound rather than cancel. Furthermore, since most citizens vote for the policies they believe are best for society, systematic errors lead voters to support socially suboptimal policies. The paper then considers the case for “paternalistically” vetoing popular but misguided democratic decisions, presenting several arguments that overruling democratic decisions is much less objectionable than overruling individual decisions. In fact, since democracies routinely adopt paternalistic policies, the opponent of paternalism for individual decisions should embrace paternalism for democratic decisions. The paper concludes by considering several different mechanisms for improving upon majority rule.

Type
Research Article
Information
Social Philosophy and Policy , Volume 26 , Issue 1 , January 2009 , pp. 198 - 211
Copyright
Copyright © Social Philosophy and Policy Foundation 2008

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References

1 Carpini, Michael Delli and Keeter, Scott, What Americans Know about Politics and Why It Matters (New Haven, CT: Yale University Press, 1996), 117Google Scholar.

2 Dye, Thomas and Zeigler, Harmon, The Irony of Democracy: An Uncommon Introduction to American Politics (Monterey, CA: Brooks/Cole Publishing Company, 1992), 206Google Scholar.

3 Delli Carpini and Keeter, What Americans Know about Politics and Why It Matters, 116–22, 89–92.

4 See, e.g., Lupia, Arthur and McCubbins, Matthew, The Democratic Dilemma: Can Citizens Learn What They Need to Know? (Cambridge: Cambridge University Press, 1998)Google Scholar; and Popkin, Samuel, The Reasoning Voter: Communication and Persuasion in Presidential Campaigns (Chicago: University of Chicago Press, 1991)Google Scholar.

5 See, e.g., Surowiecki, James, The Wisdom of Crowds (New York: Doubleday, 2004)Google Scholar; Drazen, Allan, Political Economy in Macroeconomics (Princeton, NJ: Princeton University Press, 2000)Google Scholar; Persson, Torsten and Tabellini, Guido, Political Economics: Explaining Economic Policy (Cambridge, MA: MIT Press, 2000)Google Scholar; Rodrik, Dani, “Understanding Economic Policy Reform,” Journal of Economic Literature 34, no. 1 (1996): 9–41Google Scholar; Wittman, Donald, The Myth of Democratic Failure: Why Political Institutions Are Efficient (Chicago: University of Chicago Press, 1995)Google Scholar; Page, Benjamin and Shapiro, Robert, The Rational Public: Fifty Years of Trends in Americans' Policy Preferences (Chicago: University of Chicago Press, 1992)CrossRefGoogle Scholar; and Becker, Gary, “Toward a More General Theory of Regulation: Comment,” Journal of Law and Economics 19, no. 2 (1976): 245–48CrossRefGoogle Scholar.

6 Converse, Philip, “Popular Representation and the Distribution of Information,” in Ferejohn, John and Kuklinski, James, eds., Information and Democratic Processes (Urbana and Chicago: University of Illinois Press, 1990), 383Google Scholar.

7 Page, Benjamin and Shapiro, Robert, “The Rational Public and Democracy,” in Marcus, George and Hanson, Russell, eds., Reconsidering the Democratic Public (University Park: Pennsylvania State University Press, 1993), 41Google Scholar.

8 This is true for continuous choices. For discrete choices, a biased electorate can still make the right choice as long as the bias is not too severe. For example, suppose an electorate faces a discrete choice to declare war or not, and voters err in a slightly hawkish direction. If peace is clearly the better option, a slight bias will not be enough to distort policy.

9 For more details, see Caplan, Bryan, The Myth of the Rational Voter: Why Democracies Choose Bad Policies (Princeton, NJ: Princeton University Press, 2007), 25, 79–80Google Scholar.

10 Kaiser Family Foundation and Harvard University Survey Project, “National Survey of Public Knowledge of Welfare Reform and the Federal Budget” (1995), table 16, available online at http://www.kff.org/kaiserpolls/1001-welftbl.cfm (accessed February 20, 2008)Google Scholar.

11 U.S. Census Bureau, Statistical Abstract of the United States: 2007 (Washington, DC, 2006)Google Scholar.

12 For more details, see Caplan, The Myth of the Rational Voter, 25–28, and Althaus, Scott, Collective Preferences in Democratic Politics: Opinion Surveys and the Will of the People (Cambridge: Cambridge University Press, 2003)CrossRefGoogle Scholar.

13 Althaus, Collective Preferences, 128–30.

14 Ibid., 130.

15 Ibid., 131.

16 These results indicate that democracies adopt policies that are bad given the existing distribution of values. The enlightened preference literature does not address whether existing policies are bad in some more objective sense.

17 The leading potential confounding variables are usually proxies for self-serving bias, such as income, income growth, job security, race, gender, and age, or proxies for ideological bias, such as party identification and self-identified position on the left-right spectrum. For more details, see Caplan, The Myth of the Rational Voter, 52–56.

18 See ibid., 50–93. This does not mean that economists are infallible, only that their views tend to be sensible relative to contemporary public opinion. During the New Deal, for example, many economists supported policies that modern economists see as deeply misguided. But given the mass appeal of these policies, it is still quite likely that the average economist during the New Deal was, by comparison, a critic.

19 Kraus, Nancy, Malmfors, Torbjörn, and Slovic, Paul, “Intuitive Toxicology: Expert and Lay Judgments of Chemical Risks,” Risk Analysis 12, no. 2 (1992): 215–32CrossRefGoogle Scholar.

20 Lichter, S. Robert and Rothman, Stanley, Environmental Cancer—A Political Disease? (New Haven, CT: Yale University Press, 1999)Google Scholar.

21 See Caplan, Bryan, “Sociotropes, Systematic Bias, and Political Failure: Reflections on the Survey of Americans and Economists on the Economy,” Social Science Quarterly 83, no. 2 (2002): 416–35CrossRefGoogle Scholar.

22 Wittman, The Myth of Democratic Failure, 31–36, 152–54.

23 Suppose, for example, that rent control costs ten landlords $200 each, but benefits a hundred tenants by $10 each. If citizens vote their narrow self-interest, a democratic vote leads to rent control even though the policy's net effect is to destroy $1,000. With logrolling, however, this inefficiency is easy to avoid. For example, landlords could agree to give each tenant a $15 bribe if they vote against rent control, leaving each group with an extra $500.

24 Caplan, Bryan, “Libertarianism Against Economism: How Economists Misunderstand Voters and Why Libertarians Should Care,” Independent Review 5, no. 4 (2001): 539–63Google Scholar.

25 See Sears, David and Funk, Carolyn, “Self-Interest in Americans' Political Opinions,” in Mansbridge, Jane, ed., Beyond Self-Interest (Chicago: University of Chicago Press, 1990), 147–70Google Scholar; and Citrin, Jack and Green, Donald, “The Self-Interest Motive in American Public Opinion,” Research in Micropolitics 3 (1990): 1–28Google Scholar.

26 Furthermore, support by the young persists even though many young people think Social Security benefits will be sharply lower by the time they retire. See Brennan, Geoffrey and Lomasky, Loren, Democracy and Decision: The Pure Theory of Electoral Preference (Cambridge: Cambridge University Press, 1993), 103CrossRefGoogle Scholar.

27 For more details, see Caplan, The Myth of the Rational Voter, 148–51.

28 See Caplan, “Sociotropes, Systematic Bias, and Political Failure.”

29 See Paul, Ellen Frankel, Miller, Fred D. Jr., and Paul, Jeffrey, eds., Autonomy (Cambridge: Cambridge University Press, 2003)CrossRefGoogle Scholar.

30 See, e.g., Shapiro, Ian, Democracy's Place (Ithaca, NY: Cornell University Press, 1996)Google Scholar.

31 Schumpeter, Joseph, Capitalism, Socialism, and Democracy (New York: Harper and Brothers Publishers, 1950), 263Google Scholar.

32 Caplan, The Myth of the Rational Voter, 114–31.

33 Ibid., 131–35.

34 Similarly, if the parents in a family abuse their children, it would be misleading to say that “the family is just hurting itself.”

35 On prima facie obligation, see Ross, W. D., The Right and the Good (Oxford: Oxford University Press, 1930)Google Scholar.

36 As David Friedman explains: “It is easy to misinterpret problems of market failure as unfairness rather than inefficiency…. The problem with public goods is not that one person pays for what someone else gets but that nobody pays and nobody gets, even though the good is worth more than it would cost to produce.” Friedman, David, Hidden Order: The Economics of Everyday Life (New York: HarperCollins, 1996), 278Google Scholar.

37 In fact, economists would roughly say that everyone but the individual driver is worse off. Unlike the other people who breathe his emissions, the driver enjoys the compensating benefit of convenient personal transportation.

38 Eigen, Lewis and Siegel, Jonathan, eds., The Macmillan Dictionary of Political Quotations (New York: Macmillan Publishing Co., 1993), 109Google Scholar.

39 For further discussion, see Caplan, The Myth of the Rational Voter, 192–99.

40 See, e.g., Gillman, Howard, The Constitution Besieged: The Rise and Demise of Lochner Era Police Powers Jurisprudence (Durham, NC: Duke University Press, 1993)Google Scholar.

41 See Epstein, Richard, “The Proper Scope of the Commerce Power,” Virginia Law Review 73, no. 8 (1987): 1387–1455CrossRefGoogle Scholar.

42 Rand, Ayn, Atlas Shrugged (New York: Signet, 1957), 1083Google Scholar.

43 Caplan, The Myth of the Rational Voter, 154–58.

44 The fact that tests have at some point been used for discriminatory ends is hardly a decisive counterargument. Should we abolish drivers' licenses simply because Saudi Arabia refuses to issue them to women?

45 Admittedly, this problem is not insuperable: voter-approved expansions of the franchise on the basis of property, race, gender, age, and more have occurred in the past.

46 For further discussion, see ibid., 199–205.

47 Of course, the “knows more than average” stipulation is crucial. Before they try to correct their students' “misconceptions,” teachers ought to double-check the quality of their lessons.