The Calculus of Consent by James M. Buchanan and Gordon Tullock is one of the Great Books in the Public Choice tradition, a scholarly tradition within economics and political science that uses tools of economicsrational choice, methodological individualism, and the notion of politics as exchangeto understand political decisions. Public choice has been criticized as cynical and depressing because it (allegedly) doesnt see people as more than hedonistic lightning calculators of pleasure and pain who would run over their own mothers to pick up a nickel on the sidewalk. Like many economic theories, it has been criticized for being reductionistic and for having a narrow, atomistic view of the detached individual. People have argued that it is evil because it advises people to act that way (spoiler alert: it doesnt). It has been called immoral because it refuses to look at people through aspirational lenses. But then again, what should we expect from what James M. Buchananone of the founders of Public Choice and 1986 Nobel Laureate for public choice ideascalls politics without romance?
Observers shouldnt sell public choice theory or public choice economists short. There is more to the Public Choice traditionand to economics more broadlythan getting and spending. Buchanan was keenly interested in ethical ideas over the course of his career, which shouldnt be surprising given his mentor Frank Knights publication record. He includes a section on Pigovian Economics and Christian Ethics in his underappreciated book Cost and Choice. There are four entries in the index to The Calculus of Consent for ethics and one for morals.
Four of those references direct readers to Chapter 16, Democratic Ethics and Economic Efficiency (emphasis added), and another directs readers to a section titled The Ethics of Pressure-Group Activity at the end of Chapter 19. Buchanan and Tullock argue that their research agenda is optimistic rather than pessimistic because they view collective decision-making (collective action) as a form of human activity through which mutual gains are made possible. They continue: Thus, in our conception, collective activity, like market activity, is a genuinely cooperative endeavor in which all parties, conceptually, stand to gain. They contrast this against much of orthodox political thought which seems to be based on the view that the collective-choice process reflects a partisan struggle in which the beneficiaries secure gains solely at the expense of the losers. Following the economist Dennis Robertson, they argue that if their analysis is correct, there need be less reliance on moral restraints of individuals. In other words, we can get better political outcomes with people as we actually know them without waiting for a Great Leap Forward or a New Socialist Man.
They recognize that people have standards: some people might think labor is OK but prostitution is grossly immoral. Turning to economists, (a)n economist may consider it morally acceptable to sell his educational services to a university, but morally unacceptable to sell his professional services to a political party. A little imagination brings up a lot of other examples. We generally agree that it is OK to buy houses and apartment complexes and rent them to strangers but that it isnt OK to present ones child with a bill for food, clothing, and shelter. Taboo foods and forbidden words appear in almost every culture. Just because people are methodological individualists does not mean they cant be vegan. They go on to discuss vote-trading, which, they argue, is almost universally condemned when money is involved. A student at the University of Minnesota, for example, was charged for offering to sell his vote in the 2008 election on eBay. Things are different when no money changes hands but when people take advantage of (t)he opportunity to trade votes on separate issues through logrolling, which, as they point out, can have some advantages insofar as it can block discriminatory legislation.
They go on to analyze arguments for and against vote-trading in different scenarios and to argue that pressure-group activity (later called rent seeking) and argue that it is an inherent and predictable part of modern democratic process that is a predictable outcome of [their] fundamental behavioral assumptions. At first, this looks depressing. However, the public choice approach gives us reasons for hope because it shifts attention from moral reform to institutional or structural reform. There is a great deal of fault in ourselves, but at least with respect to public choices, they can be mitigated a great deal by addressing the faults in our incentives.