february 1948

Members of Heaven’s Gate, a religious cult, believed that as the Hale-Bopp comet passed by Earth in 1997, a spaceship would be traveling in its wake—ready to take true believers aboard. Several members of the group bought an expensive, high-powered telescope so that they might get a clearer view of the comet. They quickly brought it back and asked for a refund. When the manager asked why, they complained that the telescope was defective, that it didn’t show the spaceship following the comet. A short time later, believing that they would be rescued once they had shed their “earthly containers” (their bodies), all 39 members killed themselves.

Heaven’s Gate followers had a tragically misguided conviction, but it is an example, albeit extreme, of cognitive dissonance, the motivational mechanism that underlies the reluctance to admit mistakes or accept scientific findings—even when those findings can save our lives. This dynamic is playing out during the pandemic among the many people who refuse to wear masks or practice social distancing. Human beings are deeply unwilling to change their minds. And when the facts clash with their preexisting convictions, some people would sooner jeopardize their health and everyone else’s than accept new information or admit to being wrong.

Donald Trump’s commutation of his friend Roger Stone’s criminal sentence is one of the most severe affronts to the rule of law during the Trump administration—and that’s really saying something. Fortunately, it’s not indelible. A future Justice Department could indict Stone once again. And this fact highlights that on the ballot in 2020 is not just a forward-looking end to Trump’s corruption and lawlessness, but also a reversal of some of his administration’s worst excesses.

Hours before the commutation, Stone said in an interview that he thought Trump would help him because the president “knows I was under enormous pressure to turn on him. It would have eased my situation considerably. But I didn’t.” Stone thought that his silence would buy a permanent get-out-of-jail-free card from his friend. But, like everyone else who’s dealt with Trump, Stone got a raw deal.

Tumbrels are rattling through the streets of the internet. Over the past few years, online-led social movements have deposed gropers, exposed bullies—and, sometimes, ruined the lives of the innocent. Commentators warn of “mob justice,” while activists exult in their newfound power to change the world.

Both groups are right, and wrong. Because the best way to see the firings, outings, and online denunciations grouped together as “cancel culture,” is not through a social lens, but an economic one.

Take the fall of the film producer Harvey Weinstein, which seems inevitable in hindsight—everyone knew he was a sex pest! There were even jokes about it on 30 Rock! But it took The New York Times months of reporting to ready its first story for publishing; the newspaper was taking on someone with deep pockets and a history of intimidating critics into silence. Then the story went off like a hand grenade. Suddenly, the mood—and the economic incentives—shifted. People who had been afraid of Weinstein were instead afraid of being taken down alongside him.

Edward Lorenz was just out of college when he was recruited into World War II. He was assigned to be a weather forecaster, despite having no experience in meteorology. What Lorenz knew was math.

So he started experimenting with differential equations, trying to make predictions based on patterns in data on past temperatures and pressures. One day, while testing his system, he repeated a simulation with a few decimals rounded off in the data. To his surprise, a radically different future emerged.

He called this finding “the butterfly effect.” In a complex model, where each day’s weather influences the next day’s, a tweak in initial conditions can have wild downstream consequences. The butterfly effect became central to the emerging field of chaos theory, which has since been applied to economics, sociology, and many other subjects, in attempts to deconstruct complex phenomena. That field is now helping predict the future of the pandemic—in particular, how it ends.

Updated at 1:40 p.m. ET on July 9, 2020.

For the past few weeks, I have been obsessed with a mystery emerging in the national COVID-19 data.

Cases have soared to terrifying levels since June. Yesterday, the U.S. had 62,000 confirmed cases, an all-time high—and about five times more than the entire continent of Europe. Several U.S. states, including Arizona and Florida, currently have more confirmed cases per capita than any other country in the world.

But average daily deaths are down 75 percent from their April peak. Despite higher death counts on Tuesday and Wednesday, the weekly average has largely plateaued in the past two weeks.

The gap between spiking cases and falling-then-flatlining deaths has become the latest partisan flashpoint. President Donald Trump has brushed off the coronavirus surge by emphasizing the lower death rate, saying that “99 percent of [COVID-19 cases] are totally harmless.” On Tuesday, Anthony Fauci, the director of the National Institute of Allergy and Infectious Diseases, warned Americans against “[taking] comfort in the lower rate of death” just hours before Trump tweeted triumphantly: “Death Rate from Coronavirus is down tenfold!”