Our Sunday Long Read comes to us this week from Jane C. Hu over at Undark:
a profile of Twitter-centric Harvard-trained epidemiologist Eric Feigl-Ding, who has been one of the most prolific voices on social media apprising Americans of the horrors of COVID-19. His critics however -- and he has
plenty in the medical science community -- say that he needs to be far more responsible with his rhetoric.
ERIC FEIGL-DING picked up his phone on the first ring. “Busy,” he said, when asked how things were going. He had just finished up an “epic, long” social media thread, he added — one of hundreds he’s posted about society’s ongoing battle with the coronavirus. “There’s so many different debates in the world of masking and herd immunity and reinfection,” he explained, among other dimensions of the pandemic. “We at FAS, we’ve been kind of monitoring all the debates and how we’re seeing signals in which the data goes one way, the debate goes the other,” he said, referring to his work with the Federation of American Scientists, a nonprofit policy think tank. He rattled off a rapid-fire sampler of hot-button Covid-19 topics: the growing anti-vaxxer movement, SARS-CoV-2 reinfection and antibodies, the body of research suggesting masks could decrease viral load, along with a quick mention of the debate among experts about what “airborne” means.
This whirlwind tour through viral Covid-19 themes felt like the conversational equivalent of Feigl-Ding’s Twitter account, which has grown by orders of magnitude since the dawn of the pandemic. The Harvard-trained scientist and 2018 Congressional aspirant posts dozens of times daily, often in the form of long, numbered threads. He’s fond of emojis, caps lock, and bombastic phrases. The first words of his very first viral tweet were “HOLY MOTHER OF GOD.”
Made in January, weeks before the massive shutdowns that brought U.S. society to a halt, that exclamation preceded his observation that the “R0” (pronounced “R-naught”) of the novel coronavirus — a mathematical measure of a disease’s reproduction rate — was 3.8. That figure had been proposed in a scientific paper, posted online ahead of peer review, that Feigl-Ding called “thermonuclear pandemic level bad.” Further in that same Twitter thread, he claimed that the novel coronavirus could spread nearly eight times faster than SARS.
The thread was widely criticized by infectious disease experts and science journalists as needlessly fear-mongering and misleading, and the researchers behind the pre-print had already tweeted that they’d lowered their estimate to an R0 of 2.5, meaning that Feigl-Ding’s SARS figure was incorrect. (Because R0 is an average measure of a virus’s transmissibility, estimates vary widely based on factors like local policy and population density; as a result, researchers have suggested that other variables may be of more use.) He soon deleted the tweet — but his influence has only grown.
At the beginning of the pandemic, before he began sounding the alarm on Covid-19’s seriousness, Feigl-Ding had around 2,000 followers. That number has since swelled to over a quarter million, as Twitter users and the mainstream media turn to Feigl-Ding as an expert source, often pointing to his pedigree as a Harvard-trained epidemiologist. And he has earned the attention of some influential people. These include Ali Nouri, the president of FAS, who brought Feigl-Ding into his organization as a senior fellow; the journalist David Wallace-Wells, who meditated on Feigl-Ding’s “holy mother of God” tweet in his March essay arguing that alarmism can be a useful tool; and former acting administrator of the Centers for Medicare and Medicaid Services Andy Slavitt. (“We all learn so much from you,” he tweeted at Feigl-Ding in July.) Ronald Gunzburger, senior adviser to Maryland Gov. Larry Hogan, even wrote a letter to Feigl-Ding attesting to how his “intentionally provocative tweet” in January “elevated the SARS-CoV-2 virus to the top of our priorities list.”
But as Feigl-Ding’s influence has grown, so have the voices of his critics, many of them fellow scientists who have expressed ongoing concern over his tweets, which they say are often unnecessarily alarmist, misleading, or sometimes just plain wrong. “Science misinformation is a huge problem right now — I think we can all appreciate it — [and] he’s a constant source of it,” said Saskia Popescu, an infectious disease epidemiologist at George Mason University and the University of Arizona who serves on FAS’ Covid-19 Rapid Response Taskforce, a separate arm of the organization from Feigl-Ding’s work. Tara Smith, an infectious disease epidemiologist at Kent State University, suggested that Feigl-Ding’s reach means his tweets have the power to be hugely influential. “With as large of a following as he has, when he says something that’s really wrong or misleading, it reverberates throughout the Twittersphere,” she said.
Critics point to numerous problems. Not too long after his “holy mother of God” tweet, for example, Feigl-Ding took to Twitter to discuss a titillating but non-peer-reviewed paper that some readers interpreted as evidence that SARS-CoV-2 was engineered in a lab; once the authors retracted the pre-print, he deleted a series of tweets from the middle of the thread. In March, Feigl-Ding tweeted a CDC graph as evidence that young people were “just as likely to be hospitalized as older generations,” but failed to mention an important detail about the age ranges represented in the graph’s bars, which didn’t actually support that claim. In August, he tweeted his support for a proposition to allow people early access to a vaccine. After criticism from epidemiologists, bioethicists, doctors, and health policy experts, Feigl-Ding deleted a few tweets at the beginning of his thread, saying they were “confusing” and “murky.” (He also argued that his critics were “spreading misinformation about what they think I said.”)
More recently, Feigl-Ding wrote a thread about coronavirus particles in flatulence, which drew criticism from researchers.
Even when his public exclamations are technically accurate, Feigl-Ding’s critics suggest that they too often invite misinterpretations. In a thread about the first study of a Covid-19 outbreak on an airplane, for example, Feigl-Ding failed to mention the important caveat that researchers suspected all but one case occurred before people got on the airplane. In another, Feigl-Ding appeared to summarize a Washington Post piece on a coronavirus mutation, but omitted crucial phrases — including the fact that just one of the five mentioned studies was peer-reviewed. It wasn’t until the sixth tweet in the thread that Feigl-Ding mentioned the important detail that the “worrisome” mutation doesn’t appear to make people sicker, though it could make the virus more contagious.
To Angela Rasmussen, a Columbia University virologist, this represents a pattern. “[T]his is his MO,” she wrote in an email. “He tweets something sensational and out of context, buries any caveats further down-thread, and watches the clicks and [retweets] roll in.”
Such critiques of Feigl-Ding’s particular brand of Covid-19 commentary are by no means new, and previous articles — in The Atlantic as far back as January, for example, New York Magazine’s Intelligencer in March, the Chronicle of Higher Education in April, and in The Daily Beast in May — have explored questions about his expertise in epidemiology (his focus prior to Covid-19 was on nutrition) and whether his approach to public health communication is appropriate or alarmist. But as his influence has grown, and as the pandemic enters a much more worrying phase, critics have continued to debate whether Feigl-Ding, for all his enthusiasms, is doing more harm than good. Some complain that Feigl-Ding’s army of followers can be hateful when other scientists publicly disagree with his tweets. Others say that Feigl-Ding himself has been known to privately message his critics — a tack that some found unwelcome.
For his part, though, Feigl-Ding says many of his critics’ disagreements with him have come down to a difference in style. “Sometimes it’s a matter of a philosophical approach about tone: Should I say ‘whoa’ or ‘wow?’” he said — adding that he thinks of those words as a type of “subject line” for a tweet. “Some people don’t like the all-caps initial thing, but it’s more of a stylistic thing. And of course, some people think: ‘This tweet is sensational.’ I’ve heard that,” he said — adding that, indeed, he has contacted critics, but always in a professional capacity. “I [direct-message] a lot of people,’ he said, “sometimes email them when I have a question.
“We have spirited debates,” he added.
I can see both sides of the argument, lord knows the baseline we're working with here is an orange idiot who lies about the virus to the point where tens of millions are purposefully laboring under false information. But the experts are saying that Feigl-Ding gets himself in way over his head, and that sometimes being that smartest guy in the room explaining to the masses gets you in trouble.
Believe me, I know.
Have multiple sources of information, is what I'm saying. And if you don't have the expertise to judge for yourself, listen to the people who do.
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