Nothing gets me going more than overt economic ignorance.
I know I’m not alone. Consider the justified roasting that Bernie Sanders got on social media for wondering why student loans come with interest rates of 6 or 8 or 10 percent while a mortgage can be taken out for only 3 percent. (The answer, of course, is that a mortgage has collateral in the form of a house, so it is a lower-risk loan to the lender than a student loan, which has no collateral and therefore requires a higher interest rate to cover the higher risk.)
When it comes to economic ignorance, libertarians are quick to repeat Murray Rothbard’s famous observation on the subject:
It is no crime to be ignorant of economics, which is, after all, a specialized discipline and one that most people consider to be a “dismal science.” But it is totally irresponsible to have a loud and vociferous opinion on economic subjects while remaining in this state of ignorance.
Economic ignorance comes in different forms, and some types of economic ignorance are less excusable than others. But the most important implication of Rothbard’s point is that the worst sort of economic ignorance is ignorance about your economic ignorance. There are varying degrees of blameworthiness for not knowing certain things about economics, but what is always unacceptable is not to recognize that you may not know enough to be speaking with authority, nor to understand the limits of economic knowledge.
Let’s explore three different types of economic ignorance before we return to the pervasive problem of not knowing what you don’t know.
1. What Isn’t Debated
Let’s start with the least excusable type of economic ignorance: not knowing agreed-upon theories or results in economics. There may not be a lot of these, but there are mo…