Larry Ribstein points us to the abstract of a new Peter Leeson paper, Ordeals:

For 400 years the most sophisticated persons in Europe decided difficult criminal cases by asking the defendant to thrust his arm into a cauldron of boiling water and fish out a ring. If his arm was unharmed, he was exonerated. If not, he was convicted. Alternatively, a priest dunked the defendant in a pool. Sinking proved his innocence; floating proved his guilt. People called these trials ordeals.

No one alive today believes ordeals were a good way to decide defendants’ guilt. But maybe they should. This paper investigates the law and economics of ordeals. I argue that ordeals accurately assigned accused criminals’ guilt and innocence. They did this by leveraging a medieval superstition called iudicium Dei. According to this superstition, God condemned the guilty and exonerated the innocent through clergy conducted physical tests.

It sure is comforting to know that we sophisticated modern folk no longer believe that such ordeals are a good way to decide the guilt of a defendant.

On the other hand .   .   .