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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.

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.

Like DeSean Jackson, the Philadelphia Eagles wide receiver who is being condemned for posting a fake Adolf Hitler quote on his Instagram feed last week, I too have had an ill-advised Hitler moment.

In 2008, I was a general columnist for ESPN.com, covering the NBA Finals series between the Los Angeles Lakers and the Boston Celtics. Heading into Game 5, I wrote a piece about how it saddened me, as a lifelong Detroit Pistons fan, to see that the Celtics were no longer as widely hated as they had once been. Trying to be funny and whimsical, I drew upon my memories of the Pistons having to beat the Celtics before winning their first NBA championship in 1989. I ended up writing, “Rooting for the Celtics is like saying Hitler was a victim.”

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!”

A disposable face mask is burning in the bottom of a cake pan. It’s a controlled blaze, the perfect size for roasting a hot dog—which someone is doing, holding it above the flame on a metal skewer. A tinny recording of “The Star-Spangled Banner” plays in the background, building to its familiar end just as the hot dog appears to be fully roasted.

The comments beneath the 30-second video, posted to Facebook in June as part of the “Burn Your Mask Challenge,” run the gamut from mirth to disdain to a swelling of patriotic pride. “LOVE THIS!” with three laugh-crying emoji. A smattering of sober warnings not to eat a hot dog that has been roasted in the fumes of incinerated fabric.

The “Burn Your Mask Challenge” started in a private Facebook group called Reopen NC, which was created in early April, not long after North Carolina Governor Roy Cooper, a Democrat, announced a statewide stay-at-home order. The 81,000 members of the group generally believe that state measures to control the spread of the coronavirus infringe on their personal rights. When Cooper announced a mask mandate last month, they started a petition against it, which has so far accrued about 5,500 signatures. A mock-up of a face mask reading This mask is as useless as our governor is still shared regularly.