Irrational Covid Fears

David Leonhardt (The New York Times)

Guido Calabresi, a federal judge and Yale law professor, invented a little fable that he has been telling law students for more than three decades.

He tells the students to imagine a god coming forth to offer society a wondrous invention that would improve everyday life in almost every way. It would allow people to spend more time with friends and family, see new places and do jobs they otherwise could not do. But it would also come with a high cost. In exchange for bestowing this invention on society, the god would choose 1,000 young men and women and strike them dead.

Calabresi then asks: Would you take the deal? Almost invariably, the students say no. The professor then delivers the fable’s lesson: “What’s the difference between this and the automobile?”

In truth, automobiles kill many more than 1,000 young Americans each year; the total U.S. death toll hovers at about 40,000 annually. We accept this toll, almost unthinkingly, because vehicle crashes have always been part of our lives. We can’t fathom a world without them.

It’s a classic example of human irrationality about risk. We often underestimate large, chronic dangers, like car crashes or chemical pollution, and fixate on tiny but salient risks, like plane crashes or shark attacks.

One way for a risk to become salient is for it to be new. That’s a core idea behind Calabresi’s fable. He asks students to consider whether they would accept the cost of vehicle travel if it did not already exist. That they say no underscores the very different ways we treat new risks and enduring ones.

I have been thinking about the fable recently because of Covid-19. Covid certainly presents a salient risk: It’s a global pandemic that has upended daily life for more than a year. It has changed how we live, where we work, even what we wear on our faces. Covid feels ubiquitous.

Fortunately, it is also curable. The vaccines have nearly eliminated death, hospitalization and other serious Covid illness among people who have received shots. The vaccines have also radically reduced the chances that people contract even a mild version of Covid or can pass it on to others.

Yet many vaccinated people continue to obsess over the risks from Covid — because they are so new and salient.

‘Psychologically hard’

To take just one example, major media outlets trumpeted new government data last week showing that 5,800 fully vaccinated Americans had contracted Covid. That may sound like a big number, but it indicates that a vaccinated person’s chances of getting Covid are about one in 11,000. The chances of getting a version any worse than a common cold are even more remote.

But they are not zero. And they will not be zero anytime in the foreseeable future. Victory over Covid will not involve its elimination. Victory will instead mean turning it into the sort of danger that plane crashes or shark attacks present — too small to be worth reordering our lives.

That is what the vaccines do. If you’re vaccinated, Covid presents a minuscule risk to you, and you present a minuscule Covid risk to anyone else. A car trip is a bigger threat, to you and others. About 100 Americans are likely to die in car crashes today. The new federal data suggests that either zero or one vaccinated person will die today from Covid.

It’s true that experts believe vaccinated people should still sometimes wear a mask, partly because it’s a modest inconvenience that further reduces a tiny risk — and mostly because it contributes to a culture of mask wearing. It is the decent thing to do when most people still aren’t vaccinated. If you’re vaccinated, a mask is more of a symbol of solidarity than anything else.

Coming to grips with the comforting realities of post-vaccination life is going to take some time for most of us. It’s only natural that so many vaccinated people continue to harbor irrational fears. Yet slowly recognizing that irrationality will be a vital part of overcoming Covid.

“We’re not going to get to a place of zero risk,” Jennifer Nuzzo, a Johns Hopkins epidemiologist, told me during a virtual Times event last week. “I don’t think that’s the right metric for feeling like things are normal.”