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Facebook has long spoken of how it helped influence and stoke democratic movements in places like the Middle East, and it tells its advertisers that it can help sway its users with ads.

It remains to be seen how effective Google’s new policy on fake news will be in practice. The policy will rely on a combination of automated and human reviews to help determine what is fake. Although satire sites like The Onion are not the target of the policy, it is not clear whether some of them, which often run fake news stories written for humorous effect, will be inadvertently affected by Google’s change.

“Subjecting 5-year-olds to this technology will not make anyone safer, and we can’t allow invasive surveillance to become the norm in our public spaces,” said Stefanie Coyle, deputy director of the Education Policy Center for the New York Civil Liberties Union.

When the system is on, Mr. LiPuma said, the software looks at the faces captured by the hundreds of cameras and calculates whether those faces match a “persons of interest” list made by school administrators.

Jayde McDonald, a political science major at Buffalo State College, grew up as one of the few black students in Lockport public schools. She said she thought it was too risky for the school to install a facial recognition system that could automatically call the police.

“I’m not sure where they are in the school or even think I’ve seen them,” said Brooke Cox, 14, a freshman at Lockport High School. “I don’t fully know why we have the cameras. I haven’t been told what their purpose is.”

“If suspended students are put on the watch list, they are going to be scrutinized more heavily,” he said, which could lead to a higher likelihood that they could enter into the criminal justice system.

Days after the district announced that the technology had been turned on, some students said they had been told very little about how it worked.

“We all want to keep our children safe in school,” she said. “But there are more effective, proven ways to do so that are less costly.”

Facebook said these News Feed modifications were not identical to those introduced last fall in six countries through its Explore program, but both alterations favor posts from friends and family over professional news sites. And what happened in those countries illustrates the unintended consequences of such a change in an online service that now has a global reach of more than two billion people every month.

The fabricated story circulated so widely that the local police issued a statement saying it wasn’t true. But when the police went to issue the warning on Facebook, they found that the message — unlike the fake news story they meant to combat — could no longer appear on News Feed because it came from an official account.Facebook explained its goals for the Explore program in Slovakia, Sri Lanka, Cambodia, Bolivia, Guatemala and Serbia in a blog post in October. “The goal of this test is to understand if people prefer to have separate places for personal and public content,” wrote Adam Mosseri, head of Facebook’s News Feed. “There is no current plan to roll this out beyond these test countries.”

The loss of visitors from Facebook was readily apparent in October, and Mr. Huallpa could communicate with Facebook only through a customer service form letter. He received an automatic reply in return.

ech giant may play in her country.“It’s a private company — they have the right to do as they please, of course,” she said. “But the first question we asked is ‘Why Bolivia?’ And we don’t even have the possibility of asking why. Why us?”

starting in the mid-2010s, those beloved blue skies began to disappear. First, the smoke came in occasional bursts, from wildfires in Canada or California or Siberia, and blew away when the wind changed direction. Within a few summers, though, it was coming in thicker, from more directions at once, and lasting longer.

Sometimes there were weeks when you were advised not to open your windows or exercise outside. Sometimes there were long stretches where you weren’t supposed to breathe the outside air at all.

Now lots of Bryant’s clients wanted to talk about climate change. They wanted to talk about how strange and disorienting and scary this new reality felt, about what the future might be like and how they might face it, about how to deal with all the strong feelings — helplessness, rage, depression, guilt — being stirred up inside them.

As a therapist, Bryant found himself unsure how to respond

while his clinical education offered lots of training in, say, substance abuse or family therapy, there was nothing about environmental crisis, or how to treat patients whose mental health was affected by it

Bryant immersed himself in the subject, joining and founding associations of climate-concerned therapists

could now turn to resources like the list maintained by the Climate Psychology Alliance North America, which contains more than 100 psychotherapists around the country who are what the organization calls “climate aware.”

Over and over, he read the same story, of potential patients who’d gone looking for someone to talk to about climate change and other environmental crises, only to be told that they were overreacting — that their concern, and not the climate, was what was out of whack and in need of treatment.

“You come in and talk about how anxious you are that fossil-fuel companies continue to pump CO2 into the air, and your therapist says, ‘So, tell me about your mother.’”

In many of the messages, people asked Bryant for referrals to climate-focused therapists in Houston or Canada or Taiwan, wherever it was the writer lived.

his practice had shifted to reflect a new reality of climate psychology. His clients didn’t just bring up the changing climate incidentally, or during disconcerting local reminders; rather, many were activists or scientists or people who specifically sought out Bryant because of their concerns about the climate crisis.

Climate change, in other words, surrounds us with constant reminders of “ethical dilemmas and deep social criticism of modern society. In its essence, climate crisis questions the relationship of humans with nature and the meaning of being human in the Anthropocene.”

It had been a challenging few years, Bryant told me when I first called to talk about his work. There were some ways in which climate fears were a natural fit in the therapy room, and he believed the field had coalesced around some answers that felt clear and useful

But treating those fears also stirred up lots of complicated questions that no one was quite sure how to answer. The traditional focus of his field, Bryant said, could be oversimplified as “fixing the individual”: treating patients as separate entities working on their personal growth

Climate change, by contrast, was a species-wide problem, a profound and constant reminder of how deeply intertwined we all are in complex systems — atmospheric, biospheric, economic — that are much bigger than us. It sometimes felt like a direct challenge to old therapeutic paradigms — and perhaps a chance to replace them with something better.

In one of climate psychology’s founding papers, published in 2011, Susan Clayton and Thomas J. Doherty posited that climate change would have “significant negative effects on mental health and well-being.” They described three broad types of possible impacts: the acute trauma of living through climate disasters; the corroding fear of a collapsing future; and the psychosocial decay that could damage the fabric of communities dealing with disruptive changes

All of these, they wrote, would make the climate crisis “as much a psychological and social phenomenon as a matter of biodiversity and geophysics.”

Many of these predictions have since been borne out

Studies have found rates of PTSD spiking in the wake of disasters, and in 2017 the American Psychological Association defined “ecoanxiety” as “a chronic fear of environmental doom.”

Climate-driven migration is on the rise, and so are stories of xenophobia and community mistrust.

eventually started a website, Climate & Mind, to serve as a sort of clearing house for other therapists searching for resources. Instead, the site became an unexpected window into the experience of would-be patients: Bryant found himself receiving messages from people around the world who stumbled across it while looking for help.

Many say it has led to symptoms of depression or anxiety; more than a quarter make an active effort not to think about it.

A poll by the American Psychiatric Association in the same year found that nearly half of Americans think climate change is already harming the nation’s mental health.

In June, the Yale Journal of Biology and Medicine published a paper cautioning that the world at large was facing “a psychological condition of ‘systemic uncertainty,’” in which “difficult emotions arise not only from experiencing the ecological loss itself,” but also from the fact that our lives are inescapably embedded in systems that keep on making those losses worse.

According to a 2022 survey by Yale and George Mason University, a majority of Americans report that they spend time worrying about climate change.

This is not an easy way to live.

Living within a context that is obviously unhealthful, he wrote, is painful: “a dimly intuited ‘fall’ from which we spend our lives trying to recover, a guilt we can never quite grasp or expiate” — a feeling of loss or dislocation whose true origins we look for, but often fail to see. This confusion leaves us feeling even worse.

When Barbara Easterlin first started studying environmental psychology 30 years ago, she told me, the focus of study was on ways in which cultivating a relationship with nature can be good for mental health

There was little or no attention to the fact that living through, or helping to cause, a collapse of nature can also be mentally harmful.

the field is still so new that it does not yet have evidence-tested treatments or standards of practice. Therapists sometimes feel as if they are finding the path as they go.

Rebecca Weston, a licensed clinical social worker practicing in New York and a co-president of the CPA-NA, told me that when she treats anxiety disorders, her goal is often to help the patient understand how much of their fear is internally produced — out of proportion to the reality they’re facing

climate anxiety is a different challenge, because people worried about climate change and environmental breakdown are often having the opposite experience: Their worries are rational and evidence-based, but they feel isolated and frustrated because they’re living in a society that tends to dismiss them.

One of the emerging tenets of climate psychology is that counselors should validate their clients’ climate-related emotions as reasonable, not pathological

it does mean validating that feelings like grief and fear and shame aren’t a form of sickness, but, as Weston put it, “are actually rational responses to a world that’s very scary and very uncertain and very dangerous for people

In the words of a handbook on climate psychology, “Paying heed to what is happening in our communities and across the globe is a healthier response than turning away in denial or disavowal.”

But this, too, raises difficult questions. “How much do we normalize people to the system we’re in?” Weston asked. “And is that the definition of health?

Or is the definition of health resisting the things that are making us so unhappy? That’s the profound tension within our field.”

“It seems to shift all the time, the sort of content and material that people are bringing in,” Alexandra Woollacott, a psychotherapist in Seattle, told the group. Sometimes it was a pervasive anxiety about the future, or trauma responses to fires or smoke or heat; other times, clients, especially young ones, wanted to vent their “sort of righteous anger and sense of betrayal” at the various powers that had built and maintained a society that was so destructive.

“I’m so glad that we have each other to process this,” she said, “because we’re humans living through this, too. I have my own trauma responses to it, I have my own grief process around it, I have my own fury at government and oil companies, and I think I don’t want to burden my clients with my own emotional response to it.”

In a field that has long emphasized boundaries, discouraging therapists from bringing their own issues or experiences into the therapy room, climate therapy offers a particular challenge: Separation can be harder when the problems at hand affect therapist and client alike

Some therapists I spoke to were worried about navigating the breakdown of barriers, while others had embraced it. “There is no place on the planet that won’t eventually be impacted, where client and therapist won’t be in it together,” a family therapist wrote in a CPA-NA newsletter. “Most therapists I know have become more vulnerable and self-disclosing in their practice.”

“If you look at or consider typical theoretical framings of something like post-traumatic growth, which is the understanding of this idea that people can sort of grow and become stronger and better after a traumatic event,” she said, then the climate crisis poses a dilemma because “there is no afterwards, right? There is no resolution anytime in our lifetimes to this crisis that we nonetheless have to build the capacities to face and to endure and to hopefully engage.”

“How,” she asked, “do you think about resilience apart from resolution?”

many of her patients are also disconnected from the natural world, which means that they struggle to process or even recognize the grief and alienation that comes from living in a society that treats nature as other, a resource to be used and discarded.

“I’m so excited by what you’re bringing in,” Woollacott replied. “I’m doing psychoanalytic training at the moment, and we study attachment theory” — how the stability of early emotional bonds affects future relationships and feelings of well-being. “But nowhere in the literature does it talk about our attachment to the land.”

Torres said that she sometimes takes her therapy sessions outside or asks patients to remember their earliest and deepest connections with animals or plants or places. She believes it will help if they learn to think of themselves “as rooted beings that aren’t just simply living in the human overlay on the environment.” It was valuable to recognize, she said, that “we are part of the land” and suffer when it suffers.

Torres described introducing her clients to methods — mindfulness, distress tolerance, emotion regulation — to help them manage acute feelings of stress or panic and to avoid the brittleness of burnout.

She also encourages them to narrativize the problem, including themselves as agents of change inside stories about how they came to be in this situation, and how they might make it different.

then she encourages them to find a community of other people who care about the same problems, with whom they could connect outside the therapy room. As Woollacott said earlier: “People who share your values. People who are committed to not looking away.”

Dwyer told the group that she had been thinking more about psychological adaptation as a form of climate mitigation

Therapy, she said, could be a way to steward human energy and creative capacities at a time when they’re most needed.

It was hard, Bryant told me when we first spoke, to do this sort of work without finding yourself asking bigger questions — namely, what was therapy actually about?

Many of the therapists I talked to spoke of their role not as “fixing” a patient’s problem or responding to a pathology, but simply giving their patients the tools to name and explore their most difficult emotions, to sit with painful feelings without instantly running away from them

many of the methods in their traditional tool kits continue to be useful in climate psychology. Anxiety and hopelessness and anger are all familiar territory, after all, with long histories of well-studied treatments.

They focused on trying to help patients develop coping skills and find meaning amid destabilization, to still see themselves as having agency and choice.

Weston, the therapist in New York, has had patients who struggle to be in a world that surrounds them with waste and trash, who experience panic because they can never find a place free of reminders of their society’s destruction

eston said, that she has trouble with the repeated refrain that therapist and patient experiencing the same losses and dreads at the same time constituted a major departure from traditional therapeutic practice

she believed this framing reflected and reinforced a bias inherent in a field that has long been most accessible to, and practiced by, the privileged. It was hardly new in the world, after all, to face the collapse of your entire way of life and still find ways to keep going.

Lately, Bryant told me, he’s been most excited about the work that happens outside the therapy room: places where groups of people gather to talk about their feelings and the future they’re facing

It was at such a meeting — a community event where people were brainstorming ways to adapt to climate chaos — that Weston, realizing she had concrete skills to offer, was inspired to rework her practice to focus on the challenge. She remembers finding the gathering empowering and energizing in a way she hadn’t experienced before. In such settings, it was automatic that people would feel embraced instead of isolated, natural that the conversation would start moving away from the individual and toward collective experiences and ideas.

There was no fully separate space, to be mended on its own. There was only a shared and broken world, and a community united in loving it.

imagine that you are a very desirable user. Your specific desirability rank would have been generated by two figures: whether other desirable people contacted you, and whether other desirable people responded when you contacted them. If you contacted a much less desirable person, their desirability score would rise; if they contacted you and you replied, then your score would fall.

The team had to analyze both first messages and first replies, because, well, men usually make the first move. “A defining feature of heterosexual online dating is that, in the vast majority of cases, it is men who establish the first contact—more than 80 percent of first messages are from men in our data set,” the study says. But “women reply very selectively to the messages they receive from men—their average reply rate is less than 20 percent—so women’s replies … can give us significant insight about who they are interested in.”

It found that—insofar as dating “leagues” are not different tiers of hotness, but a single ascending hierarchy of desirability—then they do seem to exist in the data. But people do not seem universally locked into them—and they can occasionally find success escaping from theirs.

“I mean, everybody knows—and as a sociologist, it’s been shown—that older women have a harder time in the dating market. But I hadn’t expected to see their desirability drop off from the time they’re 18 to the time they’re 65,”

Across the four cities and the thousands of users, consistent patterns around age, race, and education level emerge. White men and Asian women are consistently more desired than other users, while black women rank anomalously lower.

“what we are seeing is overwhelmingly the effect of white preferences,” she cautioned. “This site is predominantly white, 70 percent white. If this was a site that was 20 percent white, we may see a totally different desirability hierarchy.”

And Bruch emphasized that the hierarchy did not just depend on race, age, and education level: Because it is derived from user behavior, it “captures whatever traits people are responding to when they pursue partners. This will include traits like wittiness, genetic factors, or whatever else drives people to message,” she said.

Here are seven other not entirely happy takeaways from Bruch’s study:- In the study, men’s desirability peaks at age 50. But women’s desirability starts high at age 18 and falls throughout their lifespan.

The key, Bruch said, is that “persistence pays off.”“Reply rates [to the average message] are between zero percent and 10 percent,” she told me. Her advice: People should note those extremely low reply rates and send out more greetings.

I was also surprised to see how flat men’s desirability was over the age distribution,” she said. “For men, it peaks around age 40 or 50. Especially in New York.”

“New York is a special case for men,” Bruch told me. “It’s the market with the highest fraction of women. But it’s also about it being an incredibly dense market.”

“Seattle presents the most unfavorable dating climate for men, with as many as two men for every woman in some segments,” the study says

Across all four cities, men and women generally tended to send longer messages to people who were more desirable than them. Women, especially, deployed this strategy.

But the only place it paid off—and the only people for whom it worked with statistically significant success—were men in Seattle. The longest messages in the study were sent by Seattle men, the study says,“and only Seattle men experience a payoff to writing longer messages.”

A more educated man is almost always more desirable, on average: Men with postgraduate degrees outperform men with bachelor’s degrees; men with bachelor’s degrees beat high-school graduates.

“But for women, an undergraduate degree is most desirable,” the study says. “Postgraduate education is associated with decreased desirability among women.

men tended to use less positive language when messaging more desirable women. They may have stumbled upon this strategy through trial and error because “in all four cities, men experience slightly lower reply rates when they write more positively worded messages.”

“The most common behavior for both men and women is to contact members of the opposite sex who on average have roughly the same ranking as themselves,

“The most popular individual in our four cities, a 30-year-old woman living in New York, received 1504 messages during the period of observation,” the study says. This is “equivalent to one message every 30 min, day and night, for the entire month.”

I was hesitant with the Times. They were far out of my comfort zone, but I felt that the people I was talking to had a sincerity greater than their confusion. Nothing that has happened since then has dissuaded me from that impression.

If you’re reading this, especially on the internet, you are the teacher for those institutions at a local, national, and global level. I understand that you didn’t ask for this position. Neither did I. History doesn’t ask you if you want to be born in a time of upheaval, it just tells you when you are. When the backlash began, I got the call from the person who had sought me out and recruited me. The fear I heard in that shaky voice coming through my mobile phone was unmistakable. It was the fear of a mob, of the unknown, and of the idea that maybe they had gotten it wrong and done something terrible. I have felt all of those things. Many of us have. It’s not a place of strength, even when it seems to be coming from someone standing in a place of power. The Times didn’t know what the internet was doing—tearing down a new hire, exposing a fraud, threatening them—everything seemed to be in the mix.

I had even written about context collapse myself, but that hadn’t saved me from falling into it, and then hurting other people I didn’t mean to hurt. This particular collapse didn’t create much of a doppelgänger, but it did find me spending a morning as a defensive jerk. I’m very sorry for that dumb mistake. It helped me learn a lesson: Be damn sure when you make angry statements. Check them out long enough that, even if the statements themselves are still angry, you are not angry by the time you make them. Again and again, I have learned this: Don’t internet angry. If you’re angry, internet later.

I think if I’d gotten to write for the Times as part of their editorial board, this might have been different. I might have been in a position to show how our media doppelgängers get invented, and how we can unwind them. It takes time and patience. It doesn’t come from denying the doppelgänger—there’s nothing there to deny. I was accused of homophobia because of the in-group language I used with anons when I worked with them. (“Anons” refers to people who identify as part of the activist collective Anonymous.) I was accused of racism for use of taboo language, mainly in a nine-year-old retweet in support of Obama. Intentions aside, it wasn’t a great tweet, and I was probably overemotional when I retweeted it.

In late 2015 I woke up a little before 6 a.m., jet-lagged in New York, and started looking at Twitter. There was a hashtag, I don’t remember if it was trending or just in my timeline, called #whitegirlsaremagic. I clicked on it, and found it was racist and sexist dross. It was being promulgated in opposition to another hashtag, #blackgirlsaremagic. I clicked on that, and found a few model shots and borderline soft-core porn of black women. Armed with this impression, I set off to tweet in righteous anger about how much I disliked women being reduced to sex objects regardless of race. I was not just wrong in this moment, I was incoherently wrong. I had made my little mental model of what #blackgirlsaremagic was, and I had no clue that I had no clue what I was talking about. My 60-second impression of #whitegirlsaremagic was dead-on, but #blackgirlsaremagic didn’t fit in the last few tweets my browser had loaded.

I had been a victim of something the sociologists Alice Marwick and danah boyd call context collapse, where people create online culture meant for one in-group, but exposed to any number of out-groups without its original context by social-media platforms, where it can be recontextualized easily and accidentally.

Not everyone believes loving engagement is the best way to fight evil beliefs, but it has a good track record. Not everyone is in a position to engage safely with racists, sexists, anti-Semites, and homophobes, but for those who are, it’s a powerful tool. Engagement is not the one true answer to the societal problems destabilizing America today, but there is no one true answer. The way forward is as multifarious and diverse as America is, and a method of nonviolent confrontation and accountability, arising from my pacifism, is what I can bring to helping my society.

Here is your task, person on the internet, reader of journalism, speaker to the world on social media: You make the world now, in a way that you never did before. Your beliefs have a power they’ve never had in human history. You must learn to investigate with a scientific and loving mind not only what is true, but what is effective in the world. Right now we are a world of geniuses who constantly love to call each other idiots. But humanity is the most complicated thing we’ve found in the universe, and so far as we know, we’re the only thing even looking. We are miracles by the billions with powers and luxuries beyond the dreams of kings of old.

We are powerful creatures, but power must come with gentleness and responsibility. No one prepared us for this, no one trained us, no one came before us with an understanding of our world. There were hints, and wise people, and I lean on and cherish them. But their philosophies and imaginations can only take us so far. We have to build our own philosophies and imagine great futures for our world in order to have any futures at all. Let mercy guide us forward in these troubled times. Let yourself imagine, because imagination is the wellspring of hope. Here, in the beginning of the 21st century, hope is our duty to the future.

Asian workers make up about 9% of New York state's population and work force, but now account for 12.5% of initial claims over the last four weeks. A year ago, they made up just 3.7% of claims during the same time period.

White workers, for example, make up 65% of New York's labor force, but only 51% of recent claims.

The overarching claims of the story were disingenuous and horrifying; the facts it included had been removed from all useful context and placed in a new, sinister one; its insinuating mention of “Muslim martyrs,” in proximity to mentions of Mr. Khan’s son, and its misleading and strategic mention of Shariah law, amounted to a repulsive smear. It was a story that appealed to bigoted ideas and that would clearly appeal to those who held them.

This was a story the likes of which was an enormous force in this election, clearly designed to function well within Facebook’s economy of sharing. And it probably would not run afoul of the narrow definition of “fake news.”

Stories like that one get to the heart of the rhetorical and strategic risk of holding up “fake news” as a broad media offensive position, especially after an election cycle characterized by the euphoric inversion of rhetoric by some of Mr. Trump’s supporters, and by the candidate himself

This tactic was used on the language of social justice, which was appropriated by opponents and redeployed nihilistically, in an open effort to sap its power while simultaneously taking advantage of what power it retained

Anti-racists were cast as the real racists. Progressives were cast as secretly regressive on their own terms

This was not a new tactic, but it was newly effective. It didn’t matter that its targets knew that it was a bad-faith maneuver, a clear bid for power rather than an attempt to engage or reason. The referees called foul, but nobody could hear them over the roar of the crowds. Or maybe they could, but realized that nobody could make them listen.

This wide formulation of “fake news” will be applied back to the traditional news media, which does not yet understand how threatened its ability is to declare things true, even when they are.

the worst identified defenders make their money outside Facebook anyway.

Another narrow response from Facebook could be to assert editorial control over external forces

Facebook is a place where people construct and project identities to friends, family and peers. It is a marketplace in which news is valuable mainly to the extent that it serves those identities. It is a system built on ranking and vetting and votin

Fake news operations are closely aligned with the experienced incentives of the Facebook economy

the outrage is at risk of being misdirected, and will be followed by the realization that the colloquial “fake news” — the newslike media, amateur and professional, for which truth is defined first in personal and political terms, and which must only meet the bar of not being obviously, inarguably, demonstrably false — will continue growing apace, gaining authority by sheer force

Media companies have spent years looking to Facebook, waiting for the company to present a solution to their mounting business concerns

Those who expect the operator of the dominant media ecosystem of our time, in response to getting caught promoting lies, to suddenly return authority to the companies it has superseded are in for a similar surprise.

The company's changes include an effort to boost the content of local news outlets, which have suffered sizable subscription and readership declines

The changes follow another major News Feed redesign, announced last week, in which Facebook said users would begin to see less content from news organizations and brands in favor of "meaningful" posts from friends and family.

Currently, 5 percent of Facebook posts are generated by news organizations; that number is expected to drop to 4 percent after the redesign, Zuckerberg said.

On Friday, Google announced it would cancel a two-month-old experiment, called Knowledge Panel, that informed its users that a news article had been disputed by independent fact-checking organizations. Conservatives had complained the feature unfairly targeted a right-leaning outlet.

More than two-thirds of Americans now get some of their news from social media, according to Pew Research Center.

That shift has empowered Facebook and Google, putting them in an uncomfortable position of deciding what news they should distribute to their global audiences. But it also has led to questions about whether these corporations should be considered media companie

"Just by putting things out to a vote in terms of what the community would find trustworthy undermines the role for any serious institutionalized process to determine what’s quality and what’s not,” he said.

rther criticism that the social network had become vulnerable to bad actors seeking to spread disinformation.

Jay Rosen, a journalism professor at New York University, said that Facebook learned the wrong lesson from Trending Topics, which was to try to avoid politics at all costs

“One of the things that can happen if you are determined to avoid politics at all costs is you are driven to illusory solutions,” he said. “I don’t think there is any alternative to using your judgement. But Facebook is convinced that there is. This idea that they can avoid judgement is part of their problem.”

Facebook revealed few details about how it is conducting its trust surveys,

"The hard question we've struggled with is how to decide what news sources are broadly trusted," Zuckerberg wrote. "We could try to make that decision ourselves, but that's not something we're comfortable with. We considered asking outside experts, which would take the decision out of our hands but would likely not solve the objectivity problem. Or we could ask you -- the community -- and have your feedback determine the ranking."

Some experts wondered whether Facebook's latest effort could be gamed.

"This seems like a positive step toward improving the news environment on Facebook," Diresta said. "That said, the potential downside is that the survey approach unfairly penalizes emerging publications."

Facebook’s experiment, called instant articles, is small to start — just a few articles from nine media companies, including The New York Times. But it signals a major shift in the relationship between publications and their readers. If you want to read the news, Facebook is saying, come to Facebook, not to NBC News or The Atlantic or The Times — and when you come, don’t leave. (For now, these articles can be viewed on an iPhone running the Facebook app.)

The front page of a newspaper and the cover of a magazine lost their dominance long ago. Web home pages are following suit. Increasingly, the articles, videos, photographs and graphics that media organizations publish are stand-alone fragments that readers happen upon one at a time, often on social media.

“In digital, every story becomes unbundled from each other, so if you’re not thinking of each story as living on its own, it’s tying yourself back to an analog era,”

But the impacts of learning on one of the most primal portions of the brain have been surprisingly underappreciated, both scientifically and outside the lab. Most of us pay little attention to our motor cortex, which controls how well we can move.

We like watching athletes in action, he said. But most of us make little effort to hone our motor skills in adulthood, and very few of us try to expand them by, for instance, learning a new sport. We could be short-changing our brains. Past neurological studies in people have shown that learning a new physical skill in adulthood, such as juggling, leads to increases in the volume of gray matter in parts of the brain related to movement control.

Even more compelling, a 2014 study with mice found that when the mice were introduced to a complicated type of running wheel, in which the rungs were irregularly spaced so that the animals had to learn a new, stutter-step type of running, their brains changed significantly. Learning to use these new wheels led to increased myelination of neurons in the animals’ motor cortexes. Myelination is the process by which parts of a brain cell are insulated, so that the messages between neurons can proceed more quickly and smoothly.

Scientists once believed that myelination in the brain occurs almost exclusively during infancy and childhood and then slows or halts altogether. But the animals running on the oddball wheels showed notable increases in the myelination of the neurons in their motor cortex even though they were adults.

In other words, learning the new skill had changed the inner workings of the adult animals’ motor cortexes; practicing a well-mastered one had not. “We don’t know” whether comparable changes occur within the brains of grown people who take up a new sport or physical skill, Dr. Krakauer said. But it seems likely, he said. “Motor skills are as cognitively challenging” in their way as traditional brainteasers such as crossword puzzles or brain-training games, he said. So adding a new sport to your repertory should have salutary effects on your brain, and also, unlike computer-based games, provide all the physical benefits of exercise.

But these latest shifts challenge key infection control assumptions that go back a century, putting a lot of what went wrong last year in context

They may also signal one of the most important advancements in public health during this pandemic.

If the importance of aerosol transmission had been accepted early, we would have been told from the beginning that it was much safer outdoors, where these small particles disperse more easily, as long as you avoid close, prolonged contact with others.

We would have tried to make sure indoor spaces were well ventilated, with air filtered as necessary.

Instead of blanket rules on gatherings, we would have targeted conditions that can produce superspreading events: people in poorly ventilated indoor spaces, especially if engaged over time in activities that increase aerosol production, like shouting and singing

We would have started using masks more quickly, and we would have paid more attention to their fit, too. And we would have been less obsessed with cleaning surfaces.

The implications of this were illustrated when I visited New York City in late April — my first trip there in more than a year.

A giant digital billboard greeted me at Times Square, with the message “Protecting yourself and others from Covid-19. Guidance from the World Health Organization.”

That billboard neglected the clearest epidemiological pattern of this pandemic: The vast majority of transmission has been indoors, sometimes beyond a range of three or even six feet. The superspreading events that play a major role in driving the pandemic occur overwhelmingly, if not exclusively, indoors.

The billboard had not a word about ventilation, nothing about opening windows or moving activities outdoors, where transmission has been rare and usually only during prolonged and close contact. (Ireland recently reported 0.1 percent of Covid-19 cases were traced to outdoor transmission.)

Mary-Louise McLaws, an epidemiologist at the University of New South Wales in Sydney, Australia, and a member of the W.H.O. committees that craft infection prevention and control guidance, wanted all this examined but knew the stakes made it harder to overcome the resistance. She told The Times last year, “If we started revisiting airflow, we would have to be prepared to change a lot of what we do.” She said it was a very good idea, but she added, “It will cause an enormous shudder through the infection control society.”

In contrast, if the aerosols had been considered a major form of transmission, in addition to distancing and masks, advice would have centered on ventilation and airflow, as well as time spent indoors. Small particles can accumulate in enclosed spaces, since they can remain suspended in the air and travel along air currents. This means that indoors, three or even six feet, while helpful, is not completely protective, especially over time.

To see this misunderstanding in action, look at what’s still happening throughout the world. In India, where hospitals have run out of supplemental oxygen and people are dying in the streets, money is being spent on fleets of drones to spray anti-coronavirus disinfectant in outdoor spaces. Parks, beaches and outdoor areas keep getting closed around the world. This year and last, organizers canceled outdoor events for the National Cherry Blossom Festival in Washington, D.C. Cambodian customs officials advised spraying disinfectant outside vehicles imported from India. The examples are many.

Meanwhile, many countries allowed their indoor workplaces to open but with inadequate aerosol protections. There was no attention to ventilation, installing air filters as necessary or even opening windows when possible, more to having people just distancing three or six feet, sometimes not requiring masks beyond that distance, or spending money on hard plastic barriers, which may be useless at best

clear evidence doesn’t easily overturn tradition or overcome entrenched feelings and egos. John Snow, often credited as the first scientific epidemiologist, showed that a contaminated well was responsible for a 1854 London cholera epidemic by removing the suspected pump’s handle and documenting how the cases plummeted afterward. Many other scientists and officials wouldn’t believe him for 12 years, when the link to a water source showed up again and became harder to deny.

Along the way to modern public health shaped largely by the fight over germs, a theory of transmission promoted by the influential public health figure Charles Chapin took hold

Dr. Chapin asserted in the early 1900s that respiratory diseases were most likely spread at close range by people touching bodily fluids or ejecting respiratory droplets, and did not allow for the possibility that such close-range infection could occur by inhaling small floating particles others emitted

He was also concerned that belief in airborne transmission, which he associated with miasma theories, would make people feel helpless and drop their guard against contact transmission. This was a mistake that would haunt infection control for the next century and more.

It was in this context in early 2020 that the W.H.O. and the C.D.C. asserted that SARS-CoV-2 was transmitted primarily via these heavier, short-range droplets, and provided guidance accordingly

Amid the growing evidence, in July, hundreds of scientists signed an open letter urging the public health agencies, especially the W.H.O., to address airborne transmission of the coronavirus.

Last October, the C.D.C. published updated guidance acknowledging airborne transmission, but as a secondary route under some circumstances, until it acknowledged airborne transmission as crucial on Friday. And the W.H.O. kept inching forward in its public statements, most recently a week ago.

Linsey Marr, a professor of engineering at Virginia Tech who made important contributions to our understanding of airborne virus transmission before the pandemic, pointed to two key scientific errors — rooted in a lot of history — that explain the resistance, and also opened a fascinating sociological window into how science can get it wrong and why.

Dr. Marr said that if you inhale a particle from the air, it’s an aerosol.

biomechanically, she said, nasal transmission faces obstacles, since nostrils point downward and the physics of particles that large makes it difficult for them to move up the nose. And in lab measurements, people emit far more of the easier-to-inhale aerosols than the droplets, she said, and even the smallest particles can be virus laden, sometimes more so than the larger ones, seemingly because of how and where they are produced in the respiratory tract.

Second, she said, proximity is conducive to transmission of aerosols as well because aerosols are more concentrated near the person emitting them. In a twist of history, modern scientists have been acting like those who equated stinky air with disease, by equating close contact, a measure of distance, only with the larger droplets, a mechanism of transmission, without examination.

Since aerosols also infect at close range, measures to prevent droplet transmission — masks and distancing — can help dampen transmission for airborne diseases as well. However, this oversight led medical people to circularly assume that if such measures worked at all, droplets must have played a big role in their transmission.

Another dynamic we’ve seen is something that is not unheard-of in the history of science: setting a higher standard of proof for theories that challenge conventional wisdom than for those that support it.

Another key problem is that, understandably, we find it harder to walk things back. It is easier to keep adding exceptions and justifications to a belief than to admit that a challenger has a better explanation.

The ancients believed that all celestial objects revolved around the earth in circular orbits. When it became clear that the observed behavior of the celestial objects did not fit this assumption, those astronomers produced ever-more-complex charts by adding epicycles — intersecting arcs and circles — to fit the heavens to their beliefs.

In a contemporary example of this attitude, the initial public health report on the Mount Vernon choir case said that it may have been caused by people “sitting close to one another, sharing snacks and stacking chairs at the end of the practice,” even though almost 90 percent of the people there developed symptoms of Covid-19

So much of what we have done throughout the pandemic — the excessive hygiene theater and the failure to integrate ventilation and filters into our basic advice — has greatly hampered our response.

Some of it, like the way we underused or even shut down outdoor space, isn’t that different from the 19th-century Londoners who flushed the source of their foul air into the Thames and made the cholera epidemic worse.

Righting this ship cannot be a quiet process — updating a web page here, saying the right thing there. The proclamations that we now know are wrong were so persistent and so loud for so long.

the progress we’ve made might lead to an overhaul in our understanding of many other transmissible respiratory diseases that take a terrible toll around the world each year and could easily cause other pandemics.

So big proclamations require probably even bigger proclamations to correct, or the information void, unnecessary fears and misinformation will persist, damaging the W.H.O. now and in the future.

I’ve seen our paper used in India to try to reason through aerosol transmission and the necessary mitigations. I’ve heard of people in India closing their windows after hearing that the virus is airborne, likely because they were not being told how to respond

The W.H.O. needs to address these fears and concerns, treating it as a matter of profound change, so other public health agencies and governments, as well as ordinary people, can better adjust.

It needs to begin a campaign proportional to the importance of all this, announcing, “We’ve learned more, and here’s what’s changed, and here’s how we can make sure everyone understands how important this is.” That’s what credible leadership looks like. Otherwise, if a web page is updated in the forest without the requisite fanfare, how will it matter?

Airlines and technology companies have been working on developing technology to do so, but New York's is the first pass being made widely available to residents.

The idea is similar to mobile airline boarding passes: they can be printed or stored on smartphones, and participating businesses and venues can use a companion app to confirm patrons' health status.

rather than boost the economy and encourage vaccination, efforts like the Excelsior Pass could wind up further spread of variants. It's also still not clear that vaccinated people cannot spread the virus to people who have not been vaccinated.

Some worry that the passes might encourage fraud and increase the spread of the virus by people who claim to be vaccinated or COVID-19 negative but aren't.

The 2004 campaign was the year of the “Web log,” or blog, when mainstream reporters and campaigns officially began losing any control they may have had over political new

Marco Rubio’s campaign marched into the election season ready to fight the usual news-cycle-by-news-cycle skirmishes. It was surprised to learn that, lo and behold, “There was no news cycle — everything was one big fire hose,” Alex Conant, a senior Rubio strategist, told me. “News was constantly breaking and at the end of the day hardly anything mattered. Things would happen; 24 hours later, everyone was talking about something else.”

Snapchat represents a change to something else: the longevity of news, how durably it keeps in our brain cells and our servers.

Snapchat is recording the here and the now, playing for today. Tomorrow will bring something new that renders today obsolete. It’s a digital Tibetan sand painting made in the image of the millennial mind.

Snapchat executives say they set up the app this way because this is what their tens of millions of younger users want; it’s how they live.

They can’t possibly have enough bandwidth to process all the incoming information and still dwell on what already was, can they?

Experienced strategists and their candidates, who could always work through their election plans methodically — promoting their candidacies one foot in front of the other, adjusting here and there for the unexpected — suddenly found that they couldn’t operate the way they always did.

The question this year has been whether 2016 will be the “Snapchat election,

Then there was Jeb Bush, expecting to press ahead by presenting what he saw as leading-edge policy proposals that would set off a prolonged back-and-forth. When Mr. Bush rolled out a fairly sweeping plan to upend the college loan system, the poor guy thought this was going to become a big thing.

It drew only modest coverage and was quickly buried by the latest bit from Donald Trump.

In this “hit refresh” political culture, damaging news does not have to stick around for long, either. The next development, good or bad, replaces it almost immediately.

Mr. Miller pointed to a recent episode in which Mr. Trump said a protester at a rally had “ties to ISIS,” after that protester charged the stage. No such ties existed. “He says ‘ISIS is attacking me’; this was debunked in eight minutes by Twitter,” Mr. Miller said. “Cable talked about it for three hours and it went away.”

“Hillary Clinton said that she was under sniper fire in Bosnia” — she wasn’t — “and that has stuck with her for 20 years,”

Mr. Trump has mastered this era of short attention spans in politics by realizing that if you’re the one regularly feeding the stream, you can forever move past your latest trouble, and hasten the mass amnesia.

It was with this in mind that The Washington Post ran an editorial late last week reminding its readers of some of Mr. Trump’s more outlandish statements and policy positions

The Post urged its readers to “remember” more than two dozen items from Mr. Trump’s record, including that he promised “to round up 11 million undocumented immigrants and deport them,” and “lied about President Obama’s birth certificate.”

as the media habits of the young drive everybody else’s, I’m reminded of that old saw about those who forget history. Now, what was I saying?

we find information or misinformation “22 times more memorable in narrative form.”

It’s a contagion, and thanks to social media, or “participatory propaganda,” highly viral

The Fox News counternarrative model is as simple as it is cunning. The segment producer’s job is to get the answers to two questions: What is the most emotionally engaging story we have right now

The next question is, how do we construct a counternarrative that includes as many existing other believable meta-narratives as possible

The hunt for the killer narrative starts with the “Morning Memo” to the producers. It shares the interpretation from the vice president of news of the highest-trending articles on Foxnews.com and Drudge

The next move is to get a few Fox News contributor regulars — elected officials and paid pundits — not just to deliver the new counternarrative but also to wrap it inside an existing or new meta-narrative.

What do the ratings tell the producers are the most engaging meta-narratives for the over 80 million Fox News viewers on all digital platforms?

Conspiracy theories.

Why do people love conspiracy stories? It’s human behavior

The emotional payoff from being on the inside of a conspiracy is a self-esteem jolt that makes you feel smarter than your tribal foe and keeps your eyeballs glued to screens

Every successful Fox News segment producer has the conspiracy script down cold. These segments work best when the “proof” of a conspiracy against a tribal leader — in this case the Republican president — makes the viewer feel under attack as well

it helps when a proposed conservative thought leader mixes in the meta-narrative to the effect that “we are victimized again by the condescending Beltway elites.”

Believing in conspiracy theories is a psychological construct for people to take back some semblance of control in their lives. It inflates their sense of importance. It makes them feel they have access to “special knowledge” that the rest of the world is “too blind,” “too dumb” or “too corrupt” to understand.

But neither automaker has convinced Wall Street that it has shed its boom-or-bust reputation tied to broader economic cycles, or is at the forefront of new technology being developed for self-driving vehicles and electric cars.

“It’s almost like Tesla is positioned in people’s minds as an energy storage company that happens to put most of its batteries on wheels,” said Andrew Stewart, chief investment officer at Exchange Capital Management, an investment firm in Ann Arbor, Mich.

While Tesla may enjoy the favor of investors, it still faces some daunting hurdles to reach its goals.

These past studies of exercise and neurogenesis understandably have focused on distance running. Lab rodents know how to run. But whether other forms of exercise likewise prompt increases in neurogenesis has been unknown and is an issue of increasing interest

new study, which was published this month in the Journal of Physiology, researchers at the University of Jyvaskyla in Finland and other institutions gathered a large group of adult male rats. The researchers injected the rats with a substance that marks new brain cells and then set groups of them to an array of different workouts, with one group remaining sedentary to serve as controls.

They found very different levels of neurogenesis, depending on how each animal had exercised. Those rats that had jogged on wheels showed robust levels of neurogenesis. Their hippocampal tissue teemed with new neurons, far more than in the brains of the sedentary animals. The greater the distance that a runner had covered during the experiment, the more new cells its brain now contained. There were far fewer new neurons in the brains of the animals that had completed high-intensity interval training. They showed somewhat higher amounts than in the sedentary animals but far less than in the distance runners. And the weight-training rats, although they were much stronger at the end of the experiment than they had been at the start, showed no discernible augmentation of neurogenesis. Their hippocampal tissue looked just like that of the animals that had not exercised at all.

“sustained aerobic exercise might be most beneficial for brain health also in humans.”

Just why distance running was so much more potent at promoting neurogenesis than the other workouts is not clear, although Dr. Nokia and her colleagues speculate that distance running stimulates the release of a particular substance in the brain known as brain-derived neurotrophic factor that is known to regulate neurogenesis. The more miles an animal runs, the more B.D.N.F. it produces. Weight training, on the other hand, while extremely beneficial for muscular health, has previously been shown to have little effect on the body’s levels of B.D.N.F.

As for high-intensity interval training, its potential brain benefits may be undercut by its very intensity, Dr. Nokia said. It is, by intent, much more physiologically draining and stressful than moderate running, and “stress tends to decrease adult hippocampal neurogenesis,” she said.

These results do not mean, however, that only running and similar moderate endurance workouts strengthen the brain, Dr. Nokia said. Those activities do seem to prompt the most neurogenesis in the hippocampus. But weight training and high-intensity intervals probably lead to different types of changes elsewhere in the brain. They might, for instance, encourage the creation of additional blood vessels or new connections between brain cells or between different parts of the brain.

At the book’s center is Mr. Piketty’s contention — contrary to the influential theory developed by Simon Kuznets in the 1950s and ’60s — that mature capitalist economies do not inevitably evolve toward greater economic equality. Instead, Mr. Piketty contends, the data reveals a deeper historical tendency for the rate of return on capital to outstrip the overall rate of economic growth, leading to greater and greater concentrations of wealth at the very top.

Mr. Piketty rejected any economic determinism. “It all depends on what the political system decides,” he said.

Mr. Piketty, who writes in the book that the collapse of Communism in 1989 left him “vaccinated for life” against the “lazy rhetoric of anticapitalism,” is no Marxian revolutionary. “I believe in private property,” he said in the interview. “But capitalism and markets should be the slave of democracy and not the opposite.”

Kaitlyn Greenidge learned about the first Black woman to become a doctor in New York. “I filed it away and thought, if I ever got a chance to write a novel, I would want it to be about this,” she said.

Libertie, the rebellious heroine of Kaitlyn Greenidge’s new novel, comes from an extraordinary family, but longs to be ordinary.

As a young Black woman growing up in Reconstruction-era Brooklyn, Libertie is expected to follow in the footsteps of her trailblazing mother, a doctor who founded a women’s clinic.

“So much of Black history is focused on exceptional people,”

I wanted to explore is, what’s the emotional and psychological toll of being an exception, of being exceptional, and also, what about the people who just want to have a regular life and find freedom and achievement in being able to live in peace with their family — which is what Libertie wants?”

“If you come from a marginalized community, one of the ways you are marginalized is people telling you that you don’t have any history, or that your history is somehow diminished, or it’s very flat, or it’s not somehow as rich as the dominant history.”

“That idea of being the first and the only was a big piece of our experience,”

They are engaged in ongoing conversations about their writing, though they draw the line at reading and editing drafts of one another’s work.

Libertie

The novel has drawn praise from writers like Jacqueline Woodson, Mira Jacob and Garth Greenwell, who wrote in a blurb that Greenidge “adds an indelible new sound to American literature, and confirms her status as one of our most gifted young writers.”

raised by a single mother who struggled to support the family on her social worker’s salary,

“I’ve always been interested in the histories of things that are lesser known,”

“There’s a really powerful lyricism that feels new in this voice,”

Greenidge and her sisters developed a reverence for storytelling and history early on, when their parents and grandparents would tell stories about their ancestors and what life was like during the civil rights movement.

“That fracture was really formative for me,” she said. “It made me hyper aware of inequality and the doublespeak that goes on in America around the American dream and American exceptionalism, because that was proven to me not to be true.”

Greenidge was collecting stories from people whose ancestors had lived there, and tracked down a woman named Ellen Holly, who was the first Black actress to have a lead, recurring role on daytime TV, in “One Life to Live.”

Greenidge filed the family’s saga away in her mind, thinking she had the premise for a novel. When she got a writing fellowship, she was able to quit her side jobs and immerse herself in the research the novel required.

The resulting story feels both epic and intimate. As she reimagined the lives of the doctor and her daughter, Greenidge wove in other historical figures and events.

In one horrific scene, Libertie and her mother tend to Black families who fled Manhattan during the New York City draft riots.

Greenidge also drew on her own family history, and her experience of being a new mother.

Her daughter, Mavis, was born days after she finished a second draft of the book, and is now 18 months old. She finished revisions while living in a multigenerational household with her own mother and sisters.

“Mother-daughter relationships are like the central relationships in my life,”

“I cannot think of a greater freedom than raising you,”