Inside today’s Daily Journal…

In 1970 George Akerlof wrote a profound economic paper… about lemons.

“The Market For Lemons: Quality Uncertainty And The Market Mechanism” described mathematically something that everyone knows intuitively: that when buyers and sellers possess asymmetric information, markets fail.

When you’re buying a used car, there’s a very high likelihood that the market price will be inefficient. So what do used car buyers do in response? The rational buyer discounts every used car, as they can’t readily determine a lemon from a peach.

And that leads to a surprising outcome. Anyone selling a high-quality car withdraws from the market. A rational seller will not accept a lemon price for a peach car. The supply of peaches contracts. The pool of available cars now contains a higher proportion of lemons, which is precisely what rational buyers suspected. And as the average quality of the supply of cars continues to decline, buyers discount the price even more. The cycle continues until only lemons remain.

The technical term for this mechanism is adverse selection, driven by information asymmetry. This is how markets fail.

Akerlof won the Nobel Prize in Economic Sciences in 2001 for this insight, sharing it with Michael Spence and Joseph Stiglitz, who extended the framework to labor markets, insurance, and education.

If you have health insurance, you’re experiencing this exact kind of market failure. If insurers cannot distinguish healthy from unhealthy applicants, premiums must be set at a blended rate. Unhealthy individuals find this rate attractive. Healthy ones find it expensive. The insured population deteriorates. Premiums rise to compensate. More healthy individuals exit. The pool of insured becomes progressively more adverse. The market is failing because regulations make it impossible to underwrite healthcare policies accurately, leading to adverse selection.

Any market where quality is difficult to observe, where sellers have an informational advantage over buyers, or where (because of regulation) the price mechanism cannot discount costs will suffer from adverse selection.

Adverse selection is most extreme when the market’s opacity is structural rather than incidental, when the information asymmetry is not a passing friction but a foundational feature of how the market is organized.

This is the real reason that private credit is imploding. Private credit is the most extreme version of the “lemons problem” that modern finance has ever produced.