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“These results undermine the universality of scale-free networks and reveal that real-world networks exhibit a rich structural diversity that will likely require new ideas and mechanisms to explain,” wrote the study’s authors, Anna Broido and Aaron Clauset of the University of Colorado at Boulder.

Network scientists agree, by and large, that the paper’s analysis is statistically sound. But when it comes to interpreting its findings, the paper seems to be functioning like a Rorschach test, in which both proponents and critics of the scale-free paradigm see what they already believed to be true. Much of the discussion has played out in vigorous Twitter debates.

The scale-free paradigm in networks emerged at a historical moment when power laws had taken on an outsize role in statistical physics. In the 1960s and 1970s, they had played a key part in universal laws that underlie phase transitions in a wide range of physical systems, a finding that earned Kenneth Wilson the 1982 Nobel Prize in physics. Soon after, power laws formed the core of two other paradigms that swept across the statistical-physics world: fractals, and a theory about organization in nature called self-organized criticality.

From the beginning, though, the scale-free paradigm also attracted pushback. Critics pointed out that preferential attachment is far from the only mechanism that can give rise to power laws, and that networks with the same power law can have very different topologies. Some network scientists and domain experts cast doubt on the scale-freeness of specific networks such as power grids, metabolic networks, and the physical internet.

If you were to observe 1,000 falling objects instead of just a rock and a feather, Clauset says, a clear picture would emerge of how both gravity and air resistance work. But his and Broido’s analysis of nearly 1,000 networks has yielded no similar clarity. “It is reasonable to believe a fundamental phenomenon would require less customized detective work” than Barabási is calling for, Clauset wrote on Twitter.

Adams did not just stick to comics: he is the author of over a dozen books (not counting the comic compendiums), which advise and analyze not only on surviving the office but also on daily life, future technology trends, romance, self-help strategy, and more. 

In his earlier books, you can feel the weight of the 1990s pressing down on his work, flattening and numbing its potency; this was the period that social scientist Francis Fukuyama dubbed “the end of history”, when the Cold War had ended, the West had won, 9/11 was just two numbers, and there were no grand missions left, no worlds left to conquer. While for millions of people, both in the United States and abroad, life was still chaotic and miserable, a lot of people found themselves living lives that were under no great immediate threat: without bombs or fascism or the threat of eviction to worry about, there was nothing left to do but to go to the office and enjoy fast-casual dining and Big Gulps, just as the Founding Fathers envisioned.

This dull but steady life produced a sense of slow-burn anxiety prominent in much of the pop culture of the time, as can be seen in movies such as Office Space, Fight Club and The Matrix, movies which cooed to their audience: there’s got to be more to life than this, right?

Beware: as I’m pretty sure Nietzsche said, when you gaze into Dilbert, eventually Dilbert gazes back into you.

for someone who satirizes business bullshit, Adams is a person who seems to have bought into much of it wholeheartedly; when he explains his approach to life he tends to speak in LinkedIn truisms, expounding on his “skill stacks” and “maximizing [his] personal energy”. (You can read more about this in his career advice book, How to Fail at Almost Everything and Still Win Big;

Following his non-Dilbert career more carefully, you can see that at every stage of his career, he’s actually quite heavily invested in the bullshit he makes fun of every day, or at least some aspects of it: he possesses an MBA from UC Berkeley, and has launched or otherwise been involved in a significant number of business ventures, most amusingly a health food wrap called the “Dilberito”.

In the past few years, Adams has gained some notoriety as a Trump supporter; having slowly moved from “vaguely all-over-the-place centrist who has some odd thoughts and thinks some aspects of Trump are impressive” to full-on MAGA guy, even writing a book called Win Bigly praising Trump’s abilities as a “master persuader”.

this is a guy who hates drab corporatespeak but loves the ideology behind it, a guy who describes the vast powerlessness of life but believes you can change it by writing some words on a napkin. That blend of rebellion against the symptoms of post-Cold War society and sworn allegiance to its machinations couldn’t lead anywhere else but to Trump, a man who rails against ‘elites’ while allowing them to run the country into the ground.

In Dilbert the Pointy-haired Boss uses this type of thinking to evil ends, in the tradition of Catch-22 and other satires of systemic brutality, but the relatable characters use it to their advantage too—by using intellectual sleight of hand with the boss to justify doing less work, or by finding clever ways to look busy when they’re not, or to avoid people who are unpleasant to be around.

I just think Adams is a guy who spent so long in the world of slick aphorisms and comic-strip logic that it eventually ate into his brain, became his entire manner of thinking

Over the next decade, officials managing the main U.S. repositories of climate-related information expect their archives’ total volume to grow from about 83 petabytes today to more than 650 petabytes.

One petabyte of digital memory can hold thousands of feature-length movies, with 650 enough to hold the contents of the Library of Congress 30 times over.

All that information, though, is more than conventional data storage can handle and more than any human mind can readily assimilate,

To accommodate it all, the federal workers tasked with managing the data are moving it into the cloud, which offers almost unlimited memory storage while eliminating the need for scientists to maintain their own on-site archive

archive managers are devising new analytical techniques and adapting a standard format for the data no matter who collected it and who wants to study it.

In essence, they are reinventing climate science from the ground up.

“We are in the midst of a technology evolution,

As of last September, government agencies and private companies had about 900 Earth-orbiting satellites gathering data about our planet, according to the Union of Concerned Scientists. That is almost three times as many as were aloft in 2008. More are being readied for launch.

ASA’s $1 billion Surface Water and Ocean Topography mission will measure Earth’s lakes, rivers and oceans in the first detailed global survey of the planet’s surface water.

That is a drop in the data bucket compared with the space agency’s $1.5 billion Nisar radar imaging satellite, which is scheduled for launch in January 2023. Its sensors will detect movements of the planet’s land, ice sheets and sea ice as small as 0.4 inches, transmitting 80 terabytes of data every day.

With current data handling systems and typical internet connections, it would take a climate researcher about a year to download just four days’ worth of Nisar dat

NASA and NOAA are working with Amazon Web Services, Google Cloud and Microsoft Corp. to move their climate databases into the cloud.

Earlier this year, the United Nations Intergovernmental Panel on Climate Change for the first time used data on past climate behavior to gauge the reliability of climate models for policy makers.

Yes, he knew they had other classes, jobs and extracurriculars; they could make arrangements to do that work silently and without a computer.

The class eased into the vow of silence, first restricting speech to 100 words a day. Other rules began on Day 1: no jewelry or makeup in class. Men and women sat separately and wore different “habits”: white shirts for the men, women in black. (Nonbinary and transgender students sat with the gender of their choice.)

Dr. McDaniel discouraged them from sharing personal information; they should get to know one another only through ideas. “He gave us new names, based on our birth time and day, using a Thai birth chart,”

“We were practicing living a monastic life. We had to wake up at 5 a.m. and journal every 30 minutes.”

If you tried to cruise to a C, you missed the point: “I realized the only way for me to get the most out of this class was to experience it all,” she said. (She got Dr. McDaniel’s permission to break her vow of silence in order to talk to patients during her clinical rotation.)

Dr. McDaniel also teaches a course called Existential Despair. Students meet once a week from 5 p.m. to midnight in a building with comfy couches, turn over their phones and curl up to read an assigned novel (cover to cover) in one sitting — books like James Baldwin’s “Giovanni’s Room” and José Saramago’s “Blindness.” Then they stay up late discussing it.

The course is not about hope, overcoming things, heroic stories,” Dr. McDaniel said. Many of the books “start sad. In the middle they’re sad. They stay sad. I’m not concerned with their 20-year-old self. I’m worried about them at my age, dealing with breast cancer, their dad dying, their child being an addict, a career that never worked out — so when they’re dealing with the bigger things in life, they know they’re not alone.”

Both courses have long wait lists. Students are hungry for a low-tech, introspective experience —

Research suggests that underprivileged young people have far fewer opportunities to think for unbroken stretches of time, so they may need even more space in college to develop what social scientists call cognitive endurance.

Yet the most visible higher ed trends are moving in the other direction

Rather than ban phones and laptops from class, some professors are brainstorming ways to embrace students’ tech addictions with class Facebook and Instagram accounts, audience response apps — and perhaps even including the friends and relatives whom students text during class as virtual participants in class discussion.

Then there’s that other unwelcome classroom visitor: artificial intelligence.

stop worrying and love the bot by designing assignments that “help students develop their prompting skills” or “use ChatGPT to generate a first draft,” according to a tip sheet produced by the Center for Teaching and Learning at Washington University in St. Louis.

It’s not at all clear that we want a future dominated by A.I.’s amoral, Cheez Whiz version of human thought

It is abundantly clear that texting, tagging and chatbotting are making students miserable right now.

One recent national survey found that 60 percent of American college students reported the symptoms of at least one mental health problem and that 15 percent said they were considering suicide

A recent meta-analysis of 36 studies of college students’ mental health found a significant correlation between longer screen time and higher risk of anxiety and depression

And while social media can sometimes help suffering students connect with peers, research on teenagers and college students suggests that overall, the support of a virtual community cannot compensate for the vortex of gossip, bullying and Instagram posturing that is bound to rot any normal person’s self-esteem.

We need an intervention: maybe not a vow of silence but a bold move to put the screens, the pinging notifications and creepy humanoid A.I. chatbots in their proper place

it does mean selectively returning to the university’s roots in the monastic schools of medieval Europe and rekindling the old-fashioned quest for meaning.

Colleges should offer a radically low-tech first-year program for students who want to apply: a secular monastery within the modern university, with a curated set of courses that ban glowing rectangles of any kind from the classroom

Students could opt to live in dorms that restrict technology, too

I prophesy that universities that do this will be surprised by how much demand there is. I frequently talk to students who resent the distracting laptops all around them during class. They feel the tug of the “imaginary string attaching me to my phone, where I have to constantly check it,”

Many, if not most, students want the elusive experience of uninterrupted thought, the kind where a hash of half-baked notions slowly becomes an idea about the world.

Even if your goal is effective use of the latest chatbot, it behooves you to read books in hard copies and read enough of them to learn what an elegant paragraph sounds like. How else will students recognize when ChatGPT churns out decent prose instead of bureaucratic drivel?

Most important, students need head space to think about their ultimate values.

His course offers a chance to temporarily exchange those unconscious structures for a set of deliberate, countercultural ones.

here are the student learning outcomes universities should focus on: cognitive endurance and existential clarity.

Contemplation and marathon reading are not ends in themselves or mere vacations from real life but are among the best ways to figure out your own answer to the question of what a human being is for

When students finish, they can move right into their area of specialization and wire up their skulls with all the technology they want, armed with the habits and perspective to do so responsibly

it’s worth learning from the radicals. Dr. McDaniel, the religious studies professor at Penn, has a long history with different monastic traditions. He grew up in Philadelphia, educated by Hungarian Catholic monks. After college, he volunteered in Thailand and Laos and lived as a Buddhist monk.

e found that no amount of academic reading could help undergraduates truly understand why “people voluntarily take on celibacy, give up drinking and put themselves under authorities they don’t need to,” he told me. So for 20 years, he has helped students try it out — and question some of their assumptions about what it means to find themselves.

“On college campuses, these students think they’re all being individuals, going out and being wild,” he said. “But they’re in a playpen. I tell them, ‘You know you’ll be protected by campus police and lawyers. You have this entire apparatus set up for you. You think you’re being an individual, but look at your four friends: They all look exactly like you and sound like you. We exist in these very strict structures we like to pretend don’t exist.’”

Colleges could do all this in classes integrated with general education requirements: ideally, a sequence of great books seminars focused on classic texts from across different civilizations.

“For the last 1,500 years, Benedictines have had to deal with technology,” Placid Solari, the abbot there, told me. “For us, the question is: How do you use the tool so it supports and enhances your purpose or mission and you don’t get owned by it?”

for novices at his monastery, “part of the formation is discipline to learn how to control technology use.” After this initial time of limited phone and TV “to wean them away from overdependence on technology and its stimulation,” they get more access and mostly make their own choices.

Evan Lutz graduated this May from Belmont Abbey with a major in theology. He stressed the special Catholic context of Belmont’s resident monks; if you experiment with monastic practices without investigating the whole worldview, it can become a shallow kind of mindfulness tourism.

The monks at Belmont Abbey do more than model contemplation and focus. Their presence compels even non-Christians on campus to think seriously about vocation and the meaning of life. “Either what the monks are doing is valuable and based on something true, or it’s completely ridiculous,” Mr. Lutz said. “In both cases, there’s something striking there, and it asks people a question.”

Pondering ultimate questions and cultivating cognitive endurance should not be luxury goods.

David Peña-Guzmán, who teaches philosophy at San Francisco State University, read about Dr. McDaniel’s Existential Despair course and decided he wanted to create a similar one. He called it the Reading Experiment. A small group of humanities majors gathered once every two weeks for five and a half hours in a seminar room equipped with couches and a big round table. They read authors ranging from Jean-Paul Sartre to Frantz Fanon

“At the beginning of every class I’d ask students to turn off their phones and put them in ‘the Basket of Despair,’ which was a plastic bag,” he told me. “I had an extended chat with them about accessibility. The point is not to take away the phone for its own sake but to take away our primary sources of distraction. Students could keep the phone if they needed it. But all of them chose to part with their phones.”

Dr. Peña-Guzmán’s students are mostly working-class, first-generation college students. He encouraged them to be honest about their anxieties by sharing his own: “I said, ‘I’m a very slow reader, and it’s likely some or most of you will get further in the text than me because I’m E.S.L. and read quite slowly in English.’

For his students, the struggle to read long texts is “tied up with the assumption that reading can happen while multitasking and constantly interacting with technologies that are making demands on their attention, even at the level of a second,”

“These draw you out of the flow of reading. You get back to the reading, but you have to restart the sentence or even the paragraph. Often, because of these technological interventions into the reading experience, students almost experience reading backward — as constant regress, without any sense of progress. The more time they spend, the less progress they make.”

Dr. Peña-Guzmán dismissed the idea that a course like his is suitable only for students who don’t have to worry about holding down jobs or paying off student debt. “I’m worried by this assumption that certain experiences that are important for the development of personality, for a certain kind of humanistic and spiritual growth, should be reserved for the elite, especially when we know those experiences are also sources of cultural capital,

Courses like the Reading Experiment are practical, too, he added. “I can’t imagine a field that wouldn’t require some version of the skill of focused attention.”

The point is not to reject new technology but to help students retain the upper hand in their relationship with i

Ms. Rodriguez said that before she took Living Deliberately and Existential Despair, she didn’t distinguish technology from education. “I didn’t think education ever went without technology. I think that’s really weird now. You don’t need to adapt every piece of technology to be able to learn better or more,” she said. “It can form this dependency.”

The point of college is to help students become independent humans who can choose the gods they serve and the rules they follow rather than allow someone else to choose for them

The first step is dethroning the small silicon idol in their pocket — and making space for the uncomfortable silence and questions that follow

I believe “Twitter poisoning” is a real thing. It is a side effect that appears when people are acting under an algorithmic system that is designed to engage them to the max. It’s a symptom of being part of a behavior-modification scheme.

The same could be said about any number of other figures, including on the left. Examples are found in the excesses of cancel culture and joyless orthodoxies in fandom, in vain attention competitions and senseless online bullying.

The human brain did not evolve to handle modern chemicals or modern media technology and is vulnerable to addiction. That is true for me and for us all.

Behavioral changes occur as a side effect of something called operant conditioning, which is the underlying mechanism of social media addiction. This is the core mechanism analogous to the role alcohol plays in alcoholism.

In the case of digital platforms, the purpose is usually “engagement,” a concept that is hard to distinguish from addiction. People receive little positive and negative jolts of social feedback — getting followed or liked, or being ignored or even humiliated.

Before social media, that kind of tight feedback loop had rarely been present in human communications outside of laboratories or marriages. (This is part of why marriage can be hard, I suspect.)  

was around when Google and other companies that operate on the personalized advertising model were created, and I can say that at least in the early days, operant conditioning was not part of the plan.

What happened was that the algorithms that optimized the individualized advertising model found their way into it automatically, unintentionally rediscovering methods that had been tested on dogs and pigeons.

There is a childish insecurity, where before there was pride. Instead of being above it all, like traditional strongmen throughout history, the modern social media-poisoned alpha male whines and frets.

What do I think are the symptoms of Twitter poisoning?

o be clear, whiners are much better than Stalins. And yet there have been plenty of more mature and gracious leaders who are better than either

When we were children, we all had to negotiate our way through the jungle of human power relationships at the playground

When we feel those old humiliations, anxieties and sadisms again as adults — over and over, because the algorithm has settled on that pattern as a powerful way to engage us — habit formation restimulates old patterns that had been dormant. We become children again, not in a positive, imaginative sense, but in a pathetic way.

Twitter poisoning makes sufferers feel more oppressed than is reasonable in response to reasonable rules. The scope of fun is constricted to transgressions.

Unfortunately, scale changes everything. Taunts become dangerous hate when amplified. A Twitter-poisoned soul will often complain of a loss of fun when someone succeeds at moderating the spew of hate.

the afflicted lose all sense of proportion about their own powers. They can come to believe they have almost supernatural abilities

The degree of narcissism becomes almost absolute. Everything is about what someone else thinks of you.

These observations should inform our concerns about TikTok. The most devastating way China might use TikTok is not to misdirect our elections or to prefer pro-China posts, but to generally ramp up social media disease, so as to make Americans more divided, less able to talk to one another and less able to put up a coordinated, unified front.

uide society. Whether that idea appeals or not, when technology degrades the minds of those same engineers, then the result can only be dysfunction.

Jaron Lanier is a computer scientist who pioneered research in virtual reality and whose books include “Ten Arguments for Deleting Your Social Media Accounts Right Now.” He is Microsoft’s “prime unifying scientist” but does not speak for the company.

the very existence of tweets about an event can make that event seem newsworthy—by virtue of having garnered tweets. This supposed newsworthiness can then result in literal news stories, written by journalists and based on inspiration or sourcing from tweets themselves, or it can entail the further spread of a tweet’s message by on-platform engagement, such as likes and quote tweets. Either way, the nature of Twitter is to assert the importance of tweets.

Tweets appear more meaningful when amplified, and when amplified they inspire more tweets in the same vein. A thing becomes “tweetworthy” when it spreads but then also justifies its value both on and beyond Twitter by virtue of having spread. This is the “famous for being famous” effect

This propensity is not unique to Twitter—all social media possesses it. But the frequency and quantity of posts on Twitter, along with their brevity, their focus on text, and their tendency to be vectors of news, official or not, make Twitter a particularly effective amplification house of mirrors

At least in theory. In practice, Twitter is more like an asylum, inmates screaming at everyone and no one in particular, histrionics displacing reason, posters posting at all costs because posting is all that is possible

Twitter shapes an epistemology for users under its thrall. What can be known, and how, becomes infected by what has, or can, be tweeted.

Producers of supposedly actual news see the world through tweet-colored glasses, by transforming tweets’ hypothetical status as news into published news—which produces more tweeting in turn.

For them, and others on this website, it has become an awful habit. Habits feel normal and even justified because they are familiar, not because they are righteous.

Twitter convinced us that it mattered, that it was the world’s news service, or a vector for hashtag activism, or a host for communities without voices, or a mouthpiece for the little gal or guy. It is those things, sometimes, for some of its users. But first, and mostly, it is a habit.

We never really tweeted to say something. We tweeted because Twitter offered a format for having something to say, over and over again. Just as the purpose of terrorism is terror, so the purpose of Twitter is tweeting.

By contrast, crystallised intelligence is based on experience and the accumulation of knowledge. Fluid intelligence peaks at the age of about 20 then gradually declines, whereas crystallised intelligence grows through your life until you hit your mid-sixties, when you start forgetting things.

that explains much about University Challenge’s appeal. Because the contestants are mostly aged around 20 and very clever, their fluid intelligence is off the scale

On the other hand, because they have had only 20 years to acquire crystallised intelligence, their store of general knowledge is likely to be lacking in some areas.

In each episode there will be questions that older viewers can answer, thanks to their greater store of crystallised intelligence, but the students cannot. Therefore we viewers don’t feel inferior when confronted by these smart young people. On the contrary: we feel, in some areas, slightly superior.

The first comprises the deconstructionists and decolonialists

It’s a brilliantly balanced format

They argue that all knowledge is contextual and that things taken for granted in the past — for instance, a canon of great authors that everyone should read at school — merely reflect an outdated, usually Eurocentric view of what’s intellectually important.

there is a real threat to the future of University Challenge and much else of value in our society, and it is this. The very concept of “general knowledge” — of a widely accepted core of information that educated, inquisitive people should have in their memory banks — is under attack from two different groups.

The other group is the technocrats who argue that the extent of human knowledge is now so vast that it’s impossible for any individual to know more than, perhaps, one billionth of it

So why not leave it entirely to computers to do the heavy lifting of knowledge storing and recall, thus freeing our minds for creativity and problem solving?

The problem with the agitators on both sides of today’s culture wars is that they are forcefully trying to shape what’s accepted as general knowledge according to a blatant political agenda.

And the problem with relying on, say, Wikipedia’s 6.5 million English-language articles to store general knowledge for all of us? It’s the tacit implication that “mere facts” are too tedious to be clogging up our brains. From there it’s a short step to saying that facts don’t matter at all, that everything should be decided by “feelings”. And from there it’s an even shorter step to fake news and pernicious conspiracy theories, the belittling of experts and hard evidence, the closing of minds, the thickening of prejudice and the trivialisation of the national conversation.

avant-garde composer John Cage. When Cage presented his discordant orchestral piece “Atlas Eclipticalis” at Lincoln Center in 1964, many patrons walked out. Members of the orchestra hissed at Cage when he took his bow; a few even smashed his electronic equipment. But Cage’s work inspired other artists, leading “historians and museum curators to embrace him as a crucial figure in the development of postmodern art,” which in turn led audiences to pay respectful attention to his work

“There was a virtuous cycle for Cage: His originality, mystery and influence provided him artist status; this encouraged serious institutions to explore his work; the frequent engagement with his work imbued Cage with cachet among the public, who then received a status boost for taking his work seriously,” writes Marx.

The internet, Marx writes in his book’s closing section, changes this dynamic. With so much content out there, the chance that others will recognize the meaning of any obscure cultural signal declines

in the age of the internet, taste tells you less about a person. You don’t need to make your way into any social world to develop a familiarity with Cage — or, for that matter, with underground hip-hop, weird performance art, or rare sneakers.

people are, obviously, no less obsessed with their own status today than they were during times of fecund cultural production.

the markers of high social rank have become more philistine. When the value of cultural capital is debased, writes Marx, it makes “popularity and economic capital even more central in marking status.”

there’s “less incentive for individuals to both create and celebrate culture with high symbolic complexity.”

It makes more sense for a parvenu to fake a ride on a private jet than to fake an interest in contemporary art. We live in a time of rapid and disorientating shifts in gender, religion and technology. Aesthetically, thanks to the internet, it’s all quite dull.

Below the browsing menu and list of categories, you'll find the My Magazines section, which contains the publications you're currently looking at, plus issues you've downloaded.

(The desktop version of News+ handles things better — there's a persistent search bar in the upper left corner of the app.)

To find a specific title in News+ (without scrolling anyhow), head over to the Following tab directly to the right of the News+ in the News app. On that screen, there's a search field, and you can type in publication titles to bring up content from both News+ and the free News section

The most frequently used section of News+ figures to be My Magazines, though to be truly useful, it's going to need a little fine tuning.

Whatever magazine I started reading in News Plus — whether it was the latest Vanity Fair or the New Republic — would pop in My Magazines  under Reading Now.

At present, it appears the only way to make a magazine stay in My Magazines is to download it from the cloud, something you do by tapping the cloud icon next to the cover. I couldn't find any way to designate a magazine as one of my favorites from within News+, so if I want to find a new issue or revisit an old one, I'm left with Apple's clunky search feature

Speaking of back issues, when you're within a magazine in News+, just tap the magazine's title at the top of the screen. You'll see a list of previous issues for that title, and in some cases, you'll see current headlines and articles from that publication's website

Select a current issue of a magazine, and you'll get a title page with a tappable table of contents. In most cases, there's no description for the article, so you'll just have to hope that the headline you're tapping on gives you a good idea of what to expect

From within the article, a Next button lets you skip ahead to the next story in an issue, while an Open button returns you to the table of contents.

Be aware that some publications, such as New Republic, simply feature PDFs of their current issues instead of formats optimized for digital devices

The New Yorker splits the difference, with no table of contents and PDFs of ad pages from the print magazine interspersed between scrollable articles. I

You have the option of signifying that you love or hate stories, which will help fine-tune News+'s recommendations, and you can add many articles to your Safari reading list

The lines between what's free and what's paid also seem a bit blurred, even with the separate News+ tab

how frequently is new content going to surface on News+? Will all back issues get the unappealing PDF treatment

New financial constraints on family formation are a potential cause, as implied by another striking finding in the Journal poll — 78 percent of adults lack confidence this generation of children will enjoy a better life than they do.

Yet a recent analysis for the Aspen Economic Strategy Group by Melissa S. Kearney and Phillip B. Levine, economics professors at the University of Maryland and Wellesley College, respectively, determined that “beyond the temporary effects of the Great Recession, no recent economic or policy change is responsible for a meaningful share of the decline in the US fertility rate since 2007.”

Their study took account of such factors as the high cost of child care, student debt service and housing as well as Medicaid coverage and the wider availability of long-acting reversible contraception. Yet they had “no success finding evidence” that any of these were decisive.

Kearney and Levine speculated instead that the answers lie in the cultural zeitgeist — “shifting priorities across cohorts of young adults,”

the timing and the magnitude of such a demographic sea-change cry out for explanation. What happened in 2007?

another event that year: Apple released the first iPhone, a revolutionary cultural moment if there ever was one. The ensuing smartphone-enabled social media boom — Facebook had opened membership to anyone older than 13 in 2006 — forever changed how human beings relate with one another.

We are just beginning to understand this development’s effect on mental health, education, religious observance, community cohesion — everything. Why wouldn’t it also affect people’s willingness to have children?

one indirect way new media affect childbearing rates is through “time competition effects” — essentially, hours spent watching the tube cannot be spent forming romantic partnerships.

a 2021 review of survey data on young adults and adolescents in the United States and other countries, the years between 2009 and 2018 saw a marked decline in reported sexual activity.

the authors hypothesized that people are distracted from the search for partners by “increasing use of computer games and social media.

during the late 20th century, Brazil’s fertility rates fell after women who watched soap operas depicting smaller families sought to emulate them by having fewer children themselves.

This may be an area where incentives do not influence behavior, at least not enough. Whether the cultural shift to lower birthrates occurs on an accelerated basis, as in the United States after 2007, or gradually, as it did in Japan, it appears permanent — “sticky,” as policy wonks say.

Since the 1960s, advances in resuscitation had helped to revive thousands of people who might otherwise have died. About 10% or 20% of those people brought with them stories of near-death experiences in which they felt their souls or selves departing from their bodies

According to several international surveys and studies, one in 10 people claims to have had a near-death experience involving cardiac arrest, or a similar experience in circumstances where they may have come close to death. That’s roughly 800 million souls worldwide who may have dipped a toe in the afterlife.

In the 1970s, a small network of cardiologists, psychiatrists, medical sociologists and social psychologists in North America and Europe began investigating whether near-death experiences proved that dying is not the end of being, and that consciousness can exist independently of the brain. The field of near-death studies was born.

in 1975, an American medical student named Raymond Moody published a book called Life After Life.

Meanwhile, new technologies and techniques were helping doctors revive more and more people who, in earlier periods of history, would have almost certainly been permanently deceased.

“We are now at the point where we have both the tools and the means to scientifically answer the age-old question: What happens when we die?” wrote Sam Parnia, an accomplished resuscitation specialist and one of the world’s leading experts on near-death experiences, in 2006. Parnia himself was devising an international study to test whether patients could have conscious awareness even after they were found clinically dead.

Borjigin, together with several colleagues, took the first close look at the record of electrical activity in the brain of Patient One after she was taken off life support. What they discovered – in results reported for the first time last year – was almost entirely unexpected, and has the potential to rewrite our understanding of death.

“I believe what we found is only the tip of a vast iceberg,” Borjigin told me. “What’s still beneath the surface is a full account of how dying actually takes place. Because there’s something happening in there, in the brain, that makes no sense.”

Over the next 30 years, researchers collected thousands of case reports of people who had had near-death experiences

near-death studies was already splitting into several schools of belief, whose tensions continue to this day. One influential camp was made up of spiritualists, some of them evangelical Christians, who were convinced that near-death experiences were genuine sojourns in the land of the dead and divine

Moody was their most important spokesman; he eventually claimed to have had multiple past lives and built a “psychomanteum” in rural Alabama where people could attempt to summon the spirits of the dead by gazing into a dimly lit mirror.

It is no longer unheard of for people to be revived even six hours after being declared clinically dead. In 2011, Japanese doctors reported the case of a young woman who was found in a forest one morning after an overdose stopped her heart the previous night; using advanced technology to circulate blood and oxygen through her body, the doctors were able to revive her more than six hours later, and she was able to walk out of the hospital after three weeks of care

The second, and largest, faction of near-death researchers were the parapsychologists, those interested in phenomena that seemed to undermine the scientific orthodoxy that the mind could not exist independently of the brain. These researchers, who were by and large trained scientists following well established research methods, tended to believe that near-death experiences offered evidence that consciousness could persist after the death of the individua

Their aim was to find ways to test their theories of consciousness empirically, and to turn near-death studies into a legitimate scientific endeavour.

Finally, there emerged the smallest contingent of near-death researchers, who could be labelled the physicalists. These were scientists, many of whom studied the brain, who were committed to a strictly biological account of near-death experiences. Like dreams, the physicalists argued, near-death experiences might reveal psychological truths, but they did so through hallucinatory fictions that emerged from the workings of the body and the brain.

Between 1975, when Moody published Life After Life, and 1984, only 17 articles in the PubMed database of scientific publications mentioned near-death experiences. In the following decade, there were 62. In the most recent 10-year span, there were 221.

Today, there is a widespread sense throughout the community of near-death researchers that we are on the verge of great discoveries

“We really are in a crucial moment where we have to disentangle consciousness from responsiveness, and maybe question every state that we consider unconscious,”

“I think in 50 or 100 years time we will have discovered the entity that is consciousness,” he told me. “It will be taken for granted that it wasn’t produced by the brain, and it doesn’t die when you die.”

it is in large part because of a revolution in our ability to resuscitate people who have suffered cardiac arrest

In a medical setting, “clinical death” is said to occur at the moment the heart stops pumping blood, and the pulse stops. This is widely known as cardiac arrest

Loss of oxygen to the brain and other organs generally follows within seconds or minutes, although the complete cessation of activity in the heart and brain – which is often called “flatlining” or, in the case of the latter, “brain death” – may not occur for many minutes or even hours.

That began to change in 1960, when the combination of mouth-to-mouth ventilation, chest compressions and external defibrillation known as cardiopulmonary resuscitation, or CPR, was formalised. Shortly thereafter, a massive campaign was launched to educate clinicians and the public on CPR’s basic techniques, and soon people were being revived in previously unthinkable, if still modest, numbers.

scientists learned that, even in its acute final stages, death is not a point, but a process. After cardiac arrest, blood and oxygen stop circulating through the body, cells begin to break down, and normal electrical activity in the brain gets disrupted. But the organs don’t fail irreversibly right away, and the brain doesn’t necessarily cease functioning altogether. There is often still the possibility of a return to life. In some cases, cell death can be stopped or significantly slowed, the heart can be restarted, and brain function can be restored. In other words, the process of death can be reversed.

In his book, Moody distilled the reports of 150 people who had had intense, life-altering experiences in the moments surrounding a cardiac arrest. Although the reports varied, he found that they often shared one or more common features or themes. The narrative arc of the most detailed of those reports – departing the body and travelling through a long tunnel, having an out-of-body experience, encountering spirits and a being of light, one’s whole life flashing before one’s eyes, and returning to the body from some outer limit – became so canonical that the art critic Robert Hughes could refer to it years later as “the familiar kitsch of near-death experience”.

In 2019, a British woman named Audrey Schoeman who was caught in a snowstorm spent six hours in cardiac arrest before doctors brought her back to life with no evident brain damage.

That is a key tenet of the parapsychologists’ arguments: if there is consciousness without brain activity, then consciousness must dwell somewhere beyond the brain

Some of the parapsychologists speculate that it is a “non-local” force that pervades the universe, like electromagnetism. This force is received by the brain, but is not generated by it, the way a television receives a broadcast.

In order for this argument to hold, something else has to be true: near-death experiences have to happen during death, after the brain shuts down

To prove this, parapsychologists point to a number of rare but astounding cases known as “veridical” near-death experiences, in which patients seem to report details from the operating room that they might have known only if they had conscious awareness during the time that they were clinically dead.

At the very least, Parnia and his colleagues have written, such phenomena are “inexplicable through current neuroscientific models”. Unfortunately for the parapsychologists, however, none of the reports of post-death awareness holds up to strict scientific scrutiny. “There are many claims of this kind, but in my long decades of research into out-of-body and near-death experiences I never met any convincing evidence that this is true,”

In other cases, there’s not enough evidence to prove that the experiences reported by cardiac arrest survivors happened when their brains were shut down, as opposed to in the period before or after they supposedly “flatlined”. “So far, there is no sufficiently rigorous, convincing empirical evidence that people can observe their surroundings during a near-death experience,”

The parapsychologists tend to push back by arguing that even if each of the cases of veridical near-death experiences leaves room for scientific doubt, surely the accumulation of dozens of these reports must count for something. But that argument can be turned on its head: if there are so many genuine instances of consciousness surviving death, then why should it have so far proven impossible to catch one empirically?

The spiritualists and parapsychologists are right to insist that something deeply weird is happening to people when they die, but they are wrong to assume it is happening in the next life rather than this one. At least, that is the implication of what Jimo Borjigin found when she investigated the case of Patient One.

In the moments after Patient One was taken off oxygen, there was a surge of activity in her dying brain. Areas that had been nearly silent while she was on life support suddenly thrummed with high-frequency electrical signals called gamma waves. In particular, the parts of the brain that scientists consider a “hot zone” for consciousness became dramatically alive. In one section, the signals remained detectable for more than six minutes. In another, they were 11 to 12 times higher than they had been before Patient One’s ventilator was removed.

“As she died, Patient One’s brain was functioning in a kind of hyperdrive,” Borjigin told me. For about two minutes after her oxygen was cut off, there was an intense synchronisation of her brain waves, a state associated with many cognitive functions, including heightened attention and memory. The synchronisation dampened for about 18 seconds, then intensified again for more than four minutes. It faded for a minute, then came back for a third time.

n those same periods of dying, different parts of Patient One’s brain were suddenly in close communication with each other. The most intense connections started immediately after her oxygen stopped, and lasted for nearly four minutes. There was another burst of connectivity more than five minutes and 20 seconds after she was taken off life support. In particular, areas of her brain associated with processing conscious experience – areas that are active when we move through the waking world, and when we have vivid dreams – were communicating with those involved in memory formation. So were parts of the brain associated with empathy. Even as she slipped irre

something that looked astonishingly like life was taking place over several minutes in Patient One’s brain.

Although a few earlier instances of brain waves had been reported in dying human brains, nothing as detailed and complex as what occurred in Patient One had ever been detected.

Given the levels of activity and connectivity in particular regions of her dying brain, Borjigin believes it’s likely that Patient One had a profound near-death experience with many of its major features: out-of-body sensations, visions of light, feelings of joy or serenity, and moral re-evaluations of one’s life. Of course,

“The brain, contrary to everybody’s belief, is actually super active during cardiac arrest,” Borjigin said. Death may be far more alive than we ever thought possible.

“The brain is so resilient, the heart is so resilient, that it takes years of abuse to kill them,” she pointed out. “Why then, without oxygen, can a perfectly healthy person die within 30 minutes, irreversibly?”

Evidence is already emerging that even total brain death may someday be reversible. In 2019, scientists at Yale University harvested the brains of pigs that had been decapitated in a commercial slaughterhouse four hours earlier. Then they perfused the brains for six hours with a special cocktail of drugs and synthetic blood. Astoundingly, some of the cells in the brains began to show metabolic activity again, and some of the synapses even began firing.