Irrational Rationality

Economists have given “rationality” a bad name. Mario Rizzo explains:

[T]he axioms of rational choice were supposed to shed light on how people actually made choices. Then a sleight of hand occurred. It was claimed that they shed light on how rational individuals would choose – without addressing the issue of whether people were in fact rational in the sense of the axioms. Finally, it was alleged – in the face of empirical evidence that people often did not choose rationally – that the axioms defined the norms of choice. They told us how rational individuals should choose. More than that. Since being rational is taken as “good,” they show us how people should behave – full stop….

The behavioralists may well be correct that people do not act in accordance with … rationality axioms. But they are surely wrong in claiming that they ought to behave in this way. The problem is not with deficient individuals. It is a problem of deficient rationality standards.

It is an old story. Pseudo-scientific economists, suffering from physics envy, strive to reduce the complexity of human behavior to simple-minded metrics, according to which they judge human rationality. When humans fail to hew to the simple-minded preferences of economistic thinkers, it is evident (to those thinkers) that humans must be nudged toward “doing the right thing.”

When economists cross the line from theorizing about economic behavior to judging it, they put themselves on the same low plain as “liberals.” The latter, at least, are honest about wanting their own way … just because … and do not resort to cheap, pseudo-scientific tricks. They simply enforce their preferences through statutes and regulations. Why “nudge” when you can coerce?

Related posts:
Why I Don’t Hang Around with Economists
The Rationality Fallacy
Greed, Cosmic Justice, and Social Welfare
Positive Rights and Cosmic Justice
Inventing “Liberalism”
Utilitarianism, “Liberalism,” and Omniscience
Utilitarianism vs. Liberty
Beware of Libertarian Paternalists
Landsburg Is Half-Right
Negative Rights, Social Norms, and the Constitution
Rights, Liberty, the Golden Rule, and the Legitimate State
The Mind of a Paternalist
Accountants of the Soul
Physics Envy
Rawls Meets Bentham
Enough of “Social Welfare”
The Case of the Purblind Economist
The Arrogance of (Some) Economists
Extreme Economism