The ride-hailing company Uber is best known for upending the taxi industry. Now it may be making waves in the economics profession as well.

For nearly 20 years, economists have been debating how cabdrivers decide when to call it a day. This may seem like a trivial question, but it is one that cuts to the heart of whether humans are fundamentally rational — in this case, whether they earn their incomes efficiently — as the discipline has traditionally assumed.

In one camp is a group of so-called behavioral economists who have found evidence that many taxi drivers work longer hours on days when business is slow and shorter hours when business is brisk — the opposite of what economic rationality, to say nothing of common sense, would seem to dictate.

In another camp is a group of more orthodox economists who argue that this perverse habit is largely an illusion in the eyes of certain researchers. Once you consult more precise numbers, they argue, you find that drivers typically work longer hours when it is in their financial interest to do so.