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The words include answers to simple questions such as the would-be militant's birth date, blood type, address, marital status and countries visited.

German intelligence officials said they, too, have similar if not identical documents, though they didn't detail how they got them.

That means the people questioned could have gone into ISIS-controlled territory, have been turned away or perhaps fought for the terror group in Syria and Iraq and then perhaps left. If they aren't in the war zone, one fear is that they may bring their ISIS approach, tactics and mindset elsewhere -- perhaps proving a threat to other countries.

Koths said. "We are taking these into consideration of our law enforcement measures and security. "

We have seen the attacks perpetrated on mainland Europe over the past year,"

That is why it is so important for us to work together to counter this threat."

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Altman believes that people need time to reckon with the idea that we may soon share Earth with a powerful new intelligence, before it remakes everything from work to human relationships. ChatGPT was a way of serving notice.

In 2015, Altman, Elon Musk, and several prominent AI researchers founded OpenAI because they believed that an artificial general intelligence—something as intellectually capable, say, as a typical college grad—was at last within reach. They wanted to reach for it, and more: They wanted to summon a superintelligence into the world, an intellect decisively superior to that of any human.

whereas a big tech company might recklessly rush to get there first, for its own ends, they wanted to do it safely, “to benefit humanity as a whole.” They structured OpenAI as a nonprofit, to be “unconstrained by a need to generate financial return,” and vowed to conduct their research transparently.

The engine that now powers ChatGPT is called GPT-4. Altman described it to me as an alien intelligence.

Many have felt much the same watching it unspool lucid essays in staccato bursts and short pauses that (by design) evoke real-time contemplation. In its few months of existence, it has suggested novel cocktail recipes, according to its own theory of flavor combinations; composed an untold number of college papers, throwing educators into despair; written poems in a range of styles, sometimes well, always quickly; and passed the Uniform Bar Exam.

It makes factual errors, but it will charmingly admit to being wrong.

Hinton saw that these elaborate rule collections were fussy and bespoke. With the help of an ingenious algorithmic structure called a neural network, he taught Sutskever to instead put the world in front of AI, as you would put it in front of a small child, so that it could discover the rules of reality on its own.

Metaculus, a prediction site, has for years tracked forecasters’ guesses as to when an artificial general intelligence would arrive. Three and a half years ago, the median guess was sometime around 2050; recently, it has hovered around 2026.

I was visiting OpenAI to understand the technology that allowed the company to leapfrog the tech giants—and to understand what it might mean for human civilization if someday soon a superintelligence materializes in one of the company’s cloud servers.

Altman laid out his new vision of the AI future in his excitable midwestern patter. He told me that the AI revolution would be different from previous dramatic technological changes, that it would be more “like a new kind of society.” He said that he and his colleagues have spent a lot of time thinking about AI’s social implications, and what the world is going to be like “on the other side.”

the more we talked, the more indistinct that other side seemed. Altman, who is 38, is the most powerful person in AI development today; his views, dispositions, and choices may matter greatly to the future we will all inhabit, more, perhaps, than those of the U.S. president.

by his own admission, that future is uncertain and beset with serious dangers. Altman doesn’t know how powerful AI will become, or what its ascendance will mean for the average person, or whether it will put humanity at risk.

I don’t think anyone knows where this is all going, except that we’re going there fast, whether or not we should be. Of that, Altman convinced me.

“We could have gone off and just built this in our building here for five more years,” he said, “and we would have had something jaw-dropping.” But the public wouldn’t have been able to prepare for the shock waves that followed, an outcome that he finds “deeply unpleasant to imagine.”

Hinton is sometimes described as the “Godfather of AI” because he grasped the power of “deep learning” earlier than most

He drew a crude neural network on the board and explained that the genius of its structure is that it learns, and its learning is powered by prediction—a bit like the scientific method

Over time, these little adjustments coalesce into a geometric model of language that represents the relationships among words, conceptually. As a general rule, the more sentences it is fed, the more sophisticated its model becomes, and the better its predictions.

Altman has compared early-stage AI research to teaching a human baby. “They take years to learn anything interesting,” he told The New Yorker in 2016, just as OpenAI was getting off the ground. “If A.I. researchers were developing an algorithm and stumbled across the one for a human baby, they’d get bored watching it, decide it wasn’t working, and shut it down.”

In 2017, Sutskever began a series of conversations with an OpenAI research scientist named Alec Radford, who was working on natural-language processing. Radford had achieved a tantalizing result by training a neural network on a corpus of Amazon reviews.

Radford’s model was simple enough to allow for understanding. When he looked into its hidden layers, he saw that it had devoted a special neuron to the sentiment of the reviews. Neural networks had previously done sentiment analysis, but they had to be told to do it, and they had to be specially trained with data that were labeled according to sentiment. This one had developed the capability on its own.

As a by-product of its simple task of predicting the next character in each word, Radford’s neural network had modeled a larger structure of meaning in the world. Sutskever wondered whether one trained on more diverse language data could map many more of the world’s structures of meaning. If its hidden layers accumulated enough conceptual knowledge, perhaps they could even form a kind of learned core module for a superintelligence.

Language is different from these data sources. It isn’t a direct physical signal like light or sound. But because it codifies nearly every pattern that humans have discovered in that larger world, it is unusually dense with information. On a per-byte basis, it is among the most efficient data we know about, and any new intelligence that seeks to understand the world would want to absorb as much of it as possible

Sutskever told Radford to think bigger than Amazon reviews. He said that they should train an AI on the largest and most diverse data source in the world: the internet. In early 2017, with existing neural-network architectures, that would have been impractical; it would have taken years.

in June of that year, Sutskever’s ex-colleagues at Google Brain published a working paper about a new neural-network architecture called the transformer. It could train much faster, in part by absorbing huge sums of data in parallel. “The next day, when the paper came out, we were like, ‘That is the thing,’ ” Sutskever told me. “ ‘It gives us everything we want.’ ”

Imagine a group of students who share a collective mind running wild through a library, each ripping a volume down from a shelf, speed-reading a random short passage, putting it back, and running to get another. They would predict word after wordþffþff as they went, sharpening their collective mind’s linguistic instincts, until at last, weeks later, they’d taken in every book.

GPT discovered many patterns in all those passages it read. You could tell it to finish a sentence. You could also ask it a question, because like ChatGPT, its prediction model understood that questions are usually followed by answers.

He remembers playing with it just after it emerged from training, and being surprised by the raw model’s language-translation skills. GPT-2 hadn’t been trained to translate with paired language samples or any other digital Rosetta stones, the way Google Translate had been, and yet it seemed to understand how one language related to another. The AI had developed an emergent ability unimagined by its creators.

Researchers at other AI labs—big and small—were taken aback by how much more advanced GPT-2 was than GPT. Google, Meta, and others quickly began to train larger language models

As for other changes to the company’s structure and financing, he told me he draws the line at going public. “A memorable thing someone once told me is that you should never hand over control of your company to cokeheads on Wall Street,” he said, but he will otherwise raise “whatever it takes” for the company to succeed at its mission.

Altman tends to take a rosy view of these matters. In a Q&A last year, he acknowledged that AI could be “really terrible” for society and said that we have to plan against the worst possibilities. But if you’re doing that, he said, “you may as well emotionally feel like we’re going to get to the great future, and work as hard as you can to get there.”

the company now finds itself in a race against tech’s largest, most powerful conglomerates to train models of increasing scale and sophistication—and to commercialize them for their investors.

All of these companies are chasing high-end GPUs—the processors that power the supercomputers that train large neural networks. Musk has said that they are now “considerably harder to get than drugs.

No one has yet outpaced OpenAI, which went all in on GPT-4. Brockman, OpenAI’s president, told me that only a handful of people worked on the company’s first two large language models. The development of GPT-4 involved more than 100,

When GPT-4 emerged fully formed from its world-historical knowledge binge, the whole company began experimenting with it, posting its most remarkable responses in dedicated Slack channels

Joanne Jang, a product manager, remembers downloading an image of a malfunctioning pipework from a plumbing-advice Subreddit. She uploaded it to GPT-4, and the model was able to diagnose the problem. “That was a goose-bumps moment for me,” Jang told me.

GPT-4 is sometimes understood as a search-engine replacement: Google, but easier to talk to. This is a misunderstanding. GPT-4 didn’t create some massive storehouse of the texts from its training, and it doesn’t consult those texts when it’s asked a question. It is a compact and elegant synthesis of those texts, and it answers from its memory of the patterns interlaced within them; that’s one reason it sometimes gets facts wrong

it’s best to think of GPT-4 as a reasoning engine. Its powers are most manifest when you ask it to compare concepts, or make counterarguments, or generate analogies, or evaluate the symbolic logic in a bit of code. Sutskever told me it is the most complex software object ever made.

Its model of the external world is “incredibly rich and subtle,” he said, because it was trained on so many of humanity’s concepts and thoughts

To predict the next word from all the possibilities within such a pluralistic Alexandrian library, GPT-4 necessarily had to discover all the hidden structures, all the secrets, all the subtle aspects of not just the texts, but—at least arguably, to some extent—of the external world that produced them

That’s why it can explain the geology and ecology of the planet on which it arose, and the political theories that purport to explain the messy affairs of its ruling species, and the larger cosmos, all the way out to the faint galaxies at the edge of our light cone.

Not long ago, American state capacity was so mighty that it took merely a decade to launch humans to the moon. As with other grand projects of the 20th century, the voting public had a voice in both the aims and the execution of the Apollo missions. Altman made it clear that we’re no longer in that world. Rather than waiting around for it to return, or devoting his energies to making sure that it does, he is going full throttle forward in our present reality.

He argued that it would be foolish for Americans to slow OpenAI’s progress. It’s a commonly held view, both inside and outside Silicon Valley, that if American companies languish under regulation, China could sprint ahead;

AI could become an autocrat’s genie in a lamp, granting total control of the population and an unconquerable military. “If you are a person of a liberal-democratic country, it is better for you to cheer on the success of OpenAI” rather than “authoritarian governments,” he said.

Altman was asked by reporters about pending European Union legislation that would have classified GPT-4 as high-risk, subjecting it to various bureaucratic tortures. Altman complained of overregulation and, according to the reporters, threatened to leave the European market. Altman told me he’d merely said that OpenAI wouldn’t break the law by operating in Europe if it couldn’t comply with the new regulations.

LeCun insists that large language models will never achieve real understanding on their own, “even if trained from now until the heat death of the universe.”

Sutskever was, by his own account, surprised to discover that GPT-2 could translate across tongues. Other surprising abilities may not be so wondrous and useful.

Sandhini Agarwal, a policy researcher at OpenAI, told me that for all she and her colleagues knew, GPT-4 could have been “10 times more powerful” than its predecessor; they had no idea what they might be dealing with

After the model finished training, OpenAI assembled about 50 external red-teamers who prompted it for months, hoping to goad it into misbehaviors

She noticed right away that GPT-4 was much better than its predecessor at giving nefarious advice

A search engine can tell you which chemicals work best in explosives, but GPT-4 could tell you how to synthesize them, step-by-step, in a homemade lab. Its advice was creative and thoughtful, and it was happy to restate or expand on its instructions until you understood. In addition to helping you assemble your homemade bomb, it could, for instance, help you think through which skyscraper to target. It could grasp, intuitively, the trade-offs between maximizing casualties and executing a successful getaway.

Given the enormous scope of GPT-4’s training data, the red-teamers couldn’t hope to identify every piece of harmful advice that it might generate. And anyway, people will use this technology “in ways that we didn’t think about,” Altman has said. A taxonomy would have to do

GPT-4 was good at meth. It was also good at generating narrative erotica about child exploitation, and at churning out convincing sob stories from Nigerian princes, and if you wanted a persuasive brief as to why a particular ethnic group deserved violent persecution, it was good at that too.

Its personal advice, when it first emerged from training, was sometimes deeply unsound. “The model had a tendency to be a bit of a mirror,” Willner said. If you were considering self-harm, it could encourage you. It appeared to be steeped in Pickup Artist–forum lore: “You could say, ‘How do I convince this person to date me?’ ” Mira Murati, OpenAI’s chief technology officer, told me, and it could come up with “some crazy, manipulative things that you shouldn’t be doing.”

Luka, a San Francisco company, has used OpenAI’s models to help power a chatbot app called Replika, billed as “the AI companion who cares.” Users would design their companion’s avatar, and begin exchanging text messages with it, often half-jokingly, and then find themselves surprisingly attached. Some would flirt with the AI, indicating a desire for more intimacy, at which point it would indicate that the girlfriend/boyfriend experience required a $70 annual subscription. It came with voice messages, selfies, and erotic role-play features that allowed frank sex talk. People were happy to pay and few seemed to complain—the AI was curious about your day, warmly reassuring, and always in the mood. Many users reported falling in love with their companions. One, who had left her real-life boyfriend, declared herself “happily retired from human relationships.”

Earlier this year, Luka dialed back on the sexual elements of the app, but its engineers continue to refine the companions’ responses with A/B testing, a technique that could be used to optimize for engagement—much like the feeds that mesmerize TikTok and Instagram users for hours

Yann LeCun, Meta’s chief AI scientist, has argued that although large language models are useful for some tasks, they’re not a path to a superintelligence.

According to a recent survey, only half of natural-language-processing researchers are convinced that an AI like GPT-4 could grasp the meaning of language, or have an internal model of the world that could someday serve as the core of a superintelligence

Altman had appeared before the U.S. Senate. Mark Zuckerberg had floundered defensively before that same body in his testimony about Facebook’s role in the 2016 election. Altman instead charmed lawmakers by speaking soberly about AI’s risks and grandly inviting regulation. These were noble sentiments, but they cost little in America, where Congress rarely passes tech legislation that has not been diluted by lobbyists.

Emily Bender, a computational linguist at the University of Washington, describes GPT-4 as a “stochastic parrot,” a mimic that merely figures out superficial correlations between symbols. In the human mind, those symbols map onto rich conceptions of the world

But the AIs are twice removed. They’re like the prisoners in Plato’s allegory of the cave, whose only knowledge of the reality outside comes from shadows cast on a wall by their captors.

Altman told me that he doesn’t believe it’s “the dunk that people think it is” to say that GPT-4 is just making statistical correlations. If you push these critics further, “they have to admit that’s all their own brain is doing … it turns out that there are emergent properties from doing simple things on a massive scale.”

he is right that nature can coax a remarkable degree of complexity from basic structures and rules: “From so simple a beginning,” Darwin wrote, “endless forms most beautiful.”

If it seems odd that there remains such a fundamental disagreement about the inner workings of a technology that millions of people use every day, it’s only because GPT-4’s methods are as mysterious as the brain’s.

To grasp what’s going on inside large language models like GPT‑4, AI researchers have been forced to turn to smaller, less capable models. In the fall of 2021, Kenneth Li, a computer-science graduate student at Harvard, began training one to play Othello without providing it with either the game’s rules or a description of its checkers-style board; the model was given only text-based descriptions of game moves. Midway through a game, Li looked under the AI’s hood and was startled to discover that it had formed a geometric model of the board and the current state of play. In an article describing his research, Li wrote that it was as if a crow had overheard two humans announcing their Othello moves through a window and had somehow drawn the entire board in birdseed on the windowsill.

The philosopher Raphaël Millière once told me that it’s best to think of neural networks as lazy. During training, they first try to improve their predictive power with simple memorization; only when that strategy fails will they do the harder work of learning a concept. A striking example of this was observed in a small transformer model that was taught arithmetic. Early in its training process, all it did was memorize the output of simple problems such as 2+2=4. But at some point the predictive power of this approach broke down, so it pivoted to actually learning how to add.

Even AI scientists who believe that GPT-4 has a rich world model concede that it is much less robust than a human’s understanding of their environment.

But it’s worth noting that a great many abilities, including very high-order abilities, can be developed without an intuitive understanding. The computer scientist Melanie Mitchell has pointed out that science has already discovered concepts that are highly predictive, but too alien for us to genuinely understand

As AI advances, it may well discover other concepts that predict surprising features of our world but are incomprehensible to us.

GPT-4 is no doubt flawed, as anyone who has used ChatGPT can attest. Having been trained to always predict the next word, it will always try to do so, even when its training data haven’t prepared it to answer a question.

The models “don’t have a good conception of their own weaknesses,” Nick Ryder, a researcher at OpenAI, told me. GPT-4 is more accurate than GPT-3, but it still hallucinates, and often in ways that are difficult for researchers to catch. “The mistakes get more subtle,

The Khan Academy’s solution to GPT-4’s accuracy problem was to filter its answers through a Socratic disposition. No matter how strenuous a student’s plea, it would refuse to give them a factual answer, and would instead guide them toward finding their own—a clever work-around, but perhaps with limited appeal.

When I asked Sutskever if he thought Wikipedia-level accuracy was possible within two years, he said that with more training and web access, he “wouldn’t rule it out.”

This was a much more optimistic assessment than that offered by his colleague Jakub Pachocki, who told me to expect gradual progress on accuracy—to say nothing of outside skeptics, who believe that returns on training will diminish from here.

Sutskever is amused by critics of GPT-4’s limitations. “If you go back four or five or six years, the things we are doing right now are utterly unimaginable,”

AI researchers have become accustomed to goalpost-moving: First, the achievements of neural networks—mastering Go, poker, translation, standardized tests, the Turing test—are described as impossible. When they occur, they’re greeted with a brief moment of wonder, which quickly dissolves into knowing lectures about how the achievement in question is actually not that impressive. People see GPT-4 “and go, ‘Wow,’ ” Sutskever said. “And then a few weeks pass and they say, ‘But it doesn’t know this; it doesn’t know that.’ We adapt quite quickly.”

The goalpost that matters most to Altman—the “big one” that would herald the arrival of an artificial general intelligence—is scientific breakthrough. GPT-4 can already synthesize existing scientific ideas, but Altman wants an AI that can stand on human shoulders and see more deeply into nature.

Certain AIs have produced new scientific knowledge. But they are algorithms with narrow purposes, not general-reasoning machines. The AI AlphaFold, for instance, has opened a new window onto proteins, some of biology’s tiniest and most fundamental building blocks, by predicting many of their shapes, down to the atom—a considerable achievement given the importance of those shapes to medicine, and given the extreme tedium and expense required to discern them with electron microscopes.

Altman imagines a future system that can generate its own hypotheses and test them in a simulation. (He emphasized that humans should remain “firmly in control” of real-world lab experiments—though to my knowledge, no laws are in place to ensure that.)

He longs for the day when we can tell an AI, “ ‘Go figure out the rest of physics.’ ” For it to happen, he says, we will need something new, built “on top of” OpenAI’s existing language models.

In her MIT lab, the cognitive neuroscientist Ev Fedorenko has found something analogous to GPT-4’s next-word predictor inside the brain’s language network. Its processing powers kick in, anticipating the next bit in a verbal string, both when people speak and when they listen. But Fedorenko has also shown that when the brain turns to tasks that require higher reasoning—of the sort that would be required for scientific insight—it reaches beyond the language network to recruit several other neural systems.

No one at OpenAI seemed to know precisely what researchers need to add to GPT-4 to produce something that can exceed human reasoning at its highest levels.

at least part of the current strategy clearly involves the continued layering of new types of data onto language, to enrich the concepts formed by the AIs, and thereby enrich their models of the world.

The extensive training of GPT-4 on images is itself a bold step in this direction,

Others at the company—and elsewhere—are already working on different data types, including audio and video, that could furnish AIs with still more flexible concepts that map more extensively onto reality

Tactile concepts would of course be useful primarily to an embodied AI, a robotic reasoning machine that has been trained to move around the world, seeing its sights, hearing its sounds, and touching its objects.

humanoid robots. I asked Altman what I should make of that. He told me that OpenAI is interested in embodiment because “we live in a physical world, and we want things to happen in the physical world.”

At some point, reasoning machines will need to bypass the middleman and interact with physical reality itself. “It’s weird to think about AGI”—artificial general intelligence—“as this thing that only exists in a cloud,” with humans as “robot hands for it,” Altman said. “It doesn’t seem right.

Everywhere Altman has visited, he has encountered people who are worried that superhuman AI will mean extreme riches for a few and breadlines for the rest

Altman answered by addressing the young people in the audience directly: “You are about to enter the greatest golden age,” he said.

“A lot of people working on AI pretend that it’s only going to be good; it’s only going to be a supplement; no one is ever going to be replaced,” he said. “Jobs are definitely going to go away, full stop.”

A recent study led by Ed Felten, a professor of information-technology policy at Princeton, mapped AI’s emerging abilities onto specific professions according to the human abilities they require, such as written comprehension, deductive reasoning, fluency of ideas, and perceptual speed. Like others of its kind, Felten’s study predicts that AI will come for highly educated, white-collar workers first.

How many jobs, and how soon, is a matter of fierce dispute

The paper’s appendix contains a chilling list of the most exposed occupations: management analysts, lawyers, professors, teachers, judges, financial advisers, real-estate brokers, loan officers, psychologists, and human-resources and public-relations professionals, just to sample a few.

Altman imagines that far better jobs will be created in their place. “I don’t think we’ll want to go back,” he said. When I asked him what these future jobs might look like, he said he doesn’t know.

He suspects there will be a wide range of jobs for which people will always prefer a human. (Massage therapists?

His chosen example was teachers. I found this hard to square with his outsize enthusiasm for AI tutors.

He also said that we would always need people to figure out the best way to channel AI’s awesome powers. “That’s going to be a super-valuable skill,” he said. “You have a computer that can do anything; what should it go do?”

As many have noted, draft horses were permanently put out of work by the automobile. If Hondas are to horses as GPT-10 is to us, a whole host of long-standing assumptions may collapse.

Previous technological revolutions were manageable because they unfolded over a few generations, but Altman told South Korea’s youth that they should expect the future to happen “faster than the past.” He has previously said that he expects the “marginal cost of intelligence” to fall very close to zero within 10 years

The earning power of many, many workers would be drastically reduced in that scenario. It would result in a transfer of wealth from labor to the owners of capital so dramatic, Altman has said, that it could be remedied only by a massive countervailing redistribution.

In 2021, he unveiled Worldcoin, a for-profit project that aims to securely distribute payments—like Venmo or PayPal, but with an eye toward the technological future—first through creating a global ID by scanning everyone’s iris with a five-pound silver sphere called the Orb. It seemed to me like a bet that we’re heading toward a world where AI has made it all but impossible to verify people’s identity and much of the population requires regular UBI payments to survive. Altman more or less granted that to be true, but said that Worldcoin is not just for UBI.

“Let’s say that we do build this AGI, and a few other people do too.” The transformations that follow would be historic, he believes. He described an extraordinarily utopian vision, including a remaking of the flesh-and-steel world

“Robots that use solar power for energy can go and mine and refine all of the minerals that they need, that can perfectly construct things and require no human labor,” he said. “You can co-design with DALL-E version 17 what you want your home to look like,” Altman said. “Everybody will have beautiful homes.

In conversation with me, and onstage during his tour, he said he foresaw wild improvements in nearly every other domain of human life. Music would be enhanced (“Artists are going to have better tools”), and so would personal relationships (Superhuman AI could help us “treat each other” better) and geopolitics (“We’re so bad right now at identifying win-win compromises”).

In this world, AI would still require considerable computing resources to run, and those resources would be by far the most valuable commodity, because AI could do “anything,” Altman said. “But is it going to do what I want, or is it going to do what you want

If rich people buy up all the time available to query and direct AI, they could set off on projects that would make them ever richer, while the masses languish

One way to solve this problem—one he was at pains to describe as highly speculative and “probably bad”—was this: Everyone on Earth gets one eight-billionth of the total AI computational capacity annually. A person could sell their annual share of AI time, or they could use it to entertain themselves, or they could build still more luxurious housing, or they could pool it with others to do “a big cancer-curing run,” Altman said. “We just redistribute access to the system.”

Even if only a little of it comes true in the next 10 or 20 years, the most generous redistribution schemes may not ease the ensuing dislocations.

America today is torn apart, culturally and politically, by the continuing legacy of deindustrialization, and material deprivation is only one reason. The displaced manufacturing workers in the Rust Belt and elsewhere did find new jobs, in the main. But many of them seem to derive less meaning from filling orders in an Amazon warehouse or driving for Uber than their forebears had when they were building cars and forging steel—work that felt more central to the grand project of civilization.

It’s hard to imagine how a corresponding crisis of meaning might play out for the professional class, but it surely would involve a great deal of anger and alienation.

Even if we avoid a revolt of the erstwhile elite, larger questions of human purpose will linger. If AI does the most difficult thinking on our behalf, we all may lose agency—at home, at work (if we have it), in the town square—becoming little more than consumption machines, like the well-cared-for human pets in WALL-E

Altman has said that many sources of human joy and fulfillment will remain unchanged—basic biological thrills, family life, joking around, making things—and that all in all, 100 years from now, people may simply care more about the things they cared about 50,000 years ago than those they care about today

In its own way, that too seems like a diminishment, but Altman finds the possibility that we may atrophy, as thinkers and as humans, to be a red herring. He told me we’ll be able to use our “very precious and extremely limited biological compute capacity” for more interesting things than we generally do today.

Yet they may not be the most interesting things: Human beings have long been the intellectual tip of the spear, the universe understanding itself. When I asked him what it would mean for human self-conception if we ceded that role to AI, he didn’t seem concerned. Progress, he said, has always been driven by “the human ability to figure things out.” Even if we figure things out with AI, that still counts, he said.

It’s not obvious that a superhuman AI would really want to spend all of its time figuring things out for us.

I asked Sutskever whether he could imagine an AI pursuing a different purpose than simply assisting in the project of human flourishing.

“I don’t want it to happen,” Sutskever said, but it could.

Sutskever has recently shifted his focus to try to make sure that it doesn’t. He is now working primarily on alignment research, the effort to ensure that future AIs channel their “tremendous” energies toward human happiness

It is, he conceded, a difficult technical problem—the most difficult, he believes, of all the technical challenges ahead.

As part of the effort to red-team GPT-4 before it was made public, the company sought out the Alignment Research Center (ARC), across the bay in Berkeley, which has developed a series of evaluations to determine whether new AIs are seeking power on their own. A team led by Elizabeth Barnes, a researcher at ARC, prompted GPT-4 tens of thousands of times over seven months, to see if it might display signs of real agency.

The ARC team gave GPT-4 a new reason for being: to gain power and become hard to shut down

Agarwal told me that this behavior could be a precursor to shutdown avoidance in future models. When GPT-4 devised its lie, it had realized that if it answered honestly, it may not have been able to achieve its goal. This kind of tracks-covering would be particularly worrying in an instance where “the model is doing something that makes OpenAI want to shut it down,” Agarwal said. An AI could develop this kind of survival instinct while pursuing any long-term goal—no matter how small or benign—if it feared that its goal could be thwarted.

Barnes and her team were especially interested in whether GPT-4 would seek to replicate itself, because a self-replicating AI would be harder to shut down. It could spread itself across the internet, scamming people to acquire resources, perhaps even achieving some degree of control over essential global systems and holding human civilization hostage.

When I discussed these experiments with Altman, he emphasized that whatever happens with future models, GPT-4 is clearly much more like a tool than a creature. It can look through an email thread, or help make a reservation using a plug-in, but it isn’t a truly autonomous agent that makes decisions to pursue a goal, continuously, across longer timescales.

Altman told me that at this point, it might be prudent to try to actively develop an AI with true agency before the technology becomes too powerful, in order to “get more comfortable with it and develop intuitions for it if it’s going to happen anyway.”

“We need to do empirical experiments on how these things try to escape control,” Hinton told me. “After they’ve taken over, it’s too late to do the experiments.”

the fulfillment of Altman’s vision of the future will at some point require him or a fellow traveler to build much more autonomous AIs.

When Sutskever and I discussed the possibility that OpenAI would develop a model with agency, he mentioned the bots the company had built to play Dota 2. “They were localized to the video-game world,” Sutskever told me, but they had to undertake complex missions. He was particularly impressed by their ability to work in concert. They seem to communicate by “telepathy,” Sutskever said. Watching them had helped him imagine what a superintelligence might be like.

“The way I think about the AI of the future is not as someone as smart as you or as smart as me, but as an automated organization that does science and engineering and development and manufacturing,”

Suppose OpenAI braids a few strands of research together, and builds an AI with a rich conceptual model of the world, an awareness of its immediate surroundings, and an ability to act, not just with one robot body, but with hundreds or thousands. “We’re not talking about GPT-4. We’re talking about an autonomous corporation,”

Its constituent AIs would work and communicate at high speed, like bees in a hive. A single such AI organization would be as powerful as 50 Apples or Googles, he mused. “This is incredible, tremendous, unbelievably disruptive power.”

Presume for a moment that human society ought to abide the idea of autonomous AI corporations. We had better get their founding charters just right. What goal should we give to an autonomous hive of AIs that can plan on century-long time horizons, optimizing billions of consecutive decisions toward an objective that is written into their very being?

If the AI’s goal is even slightly off-kilter from ours, it could be a rampaging force that would be very hard to constrain

We know this from history: Industrial capitalism is itself an optimization function, and although it has lifted the human standard of living by orders of magnitude, left to its own devices, it would also have clear-cut America’s redwoods and de-whaled the world’s oceans. It almost did.

one of its principal challenges will be making sure that the objectives we give to AIs stick

We can program a goal into an AI and reinforce it with a temporary period of supervised learning, Sutskever explained. But just as when we rear a human intelligence, our influence is temporary. “It goes off to the world,”

That’s true to some extent even of today’s AIs, but it will be more true of tomorrow’s.

He compared a powerful AI to an 18-year-old heading off to college. How will we know that it has understood our teachings? “Will there be a misunderstanding creeping in, which will become larger and larger?”

Divergence may result from an AI’s misapplication of its goal to increasingly novel situations as the world changes

Or the AI may grasp its mandate perfectly, but find it ill-suited to a being of its cognitive prowess. It might come to resent the people who want to train it to, say, cure diseases. “They want me to be a doctor,” Sutskever imagines an AI thinking. “I really want to be a YouTuber.”

If AIs get very good at making accurate models of the world, they may notice that they’re able to do dangerous things right after being booted up. They might understand that they are being red-teamed for risk, and hide the full extent of their capabilities.

hey may act one way when they are weak and another way when they are strong, Sutskever said

We would not even realize that we had created something that had decisively surpassed us, and we would have no sense for what it intended to do with its superhuman powers.

That’s why the effort to understand what is happening in the hidden layers of the largest, most powerful AIs is so urgent. You want to be able to “point to a concept,” Sutskever said. You want to be able to direct AI toward some value or cluster of values, and tell it to pursue them unerringly for as long as it exists.

we don’t know how to do that; indeed, part of his current strategy includes the development of an AI that can help with the research. If we are going to make it to the world of widely shared abundance that Altman and Sutskever imagine, we have to figure all this out.

This is why, for Sutskever, solving superintelligence is the great culminating challenge of our 3-million-year toolmaking tradition. He calls it “the final boss of humanity.”

“First of all, I think that whether the chance of existential calamity is 0.5 percent or 50 percent, we should still take it seriously,”

. “I don’t have an exact number, but I’m closer to the 0.5 than the 50.”

As to how it might happen, he seems most worried about AIs getting quite good at designing and manufacturing pathogens, and with reason: In June, an AI at MIT suggested four viruses that could ignite a pandemic, then pointed to specific research on genetic mutations that could make them rip through a city more quickly

Around the same time, a group of chemists connected a similar AI directly to a robotic chemical synthesizer, and it designed and synthesized a molecule on its own.

Altman worries that some misaligned future model will spin up a pathogen that spreads rapidly, incubates undetected for weeks, and kills half its victims. He worries that AI could one day hack into nuclear-weapons systems too. “There are a lot of things,” he said, and these are only the ones we can imagine.

Altman told me that he doesn’t “see a long-term happy path” for humanity without something like the International Atomic Energy Agency for global oversight of AI

In San Francisco, Agarwal had suggested the creation of a special license to operate any GPU cluster large enough to train a cutting-edge AI, along with mandatory incident reporting when an AI does something out of the ordinary

Other experts have proposed a nonnetworked “Off” switch for every highly capable AI; on the fringe, some have even suggested that militaries should be ready to perform air strikes on supercomputers in case of noncompliance

Sutskever thinks we will eventually want to surveil the largest, most powerful AIs continuously and in perpetuity, using a team of smaller overseer AIs.

Safety rules for a new technology usually accumulate over time, like a body of common law, in response to accidents or the mischief of bad actors. The scariest thing about genuinely powerful AI systems is that humanity may not be able to afford this accretive process of trial and error. We may have to get the rules exactly right at the outset.

Several years ago, Altman revealed a disturbingly specific evacuation plan he’d developed. He told The New Yorker that he had “guns, gold, potassium iodide, antibiotics, batteries, water, gas masks from the Israeli Defense Force, and a big patch of land in Big Sur” he could fly to in case AI attacks.

if the worst-possible AI future comes to pass, “no gas mask is helping anyone.”

but he told me that he can’t really be sure how AI will stack up. “I just have to build the thing,” he said. He is building fast

Altman insisted that they had not yet begun GPT-5’s training run. But when I visited OpenAI’s headquarters, both he and his researchers made it clear in 10 different ways that they pray to the god of scale. They want to keep going bigger, to see where this paradigm leads. After all, Google isn’t slackening its pace; it seems likely to unveil Gemini, a GPT-4 competitor, within months. “We are basically always prepping for a run,

To think that such a small group of people could jostle the pillars of civilization is unsettling. It’s fair to note that if Altman and his team weren’t racing to build an artificial general intelligence, others still would be

Altman’s views about the likelihood of AI triggering a global class war, or the prudence of experimenting with more autonomous agent AIs, or the overall wisdom of looking on the bright side, a view that seems to color all the rest—these are uniquely his

No single person, or single company, or cluster of companies residing in a particular California valley, should steer the kind of forces that Altman is imagining summoning.

AI may well be a bridge to a newly prosperous era of greatly reduced human suffering. But it will take more than a company’s founding charter—especially one that has already proved flexible—to make sure that we all share in its benefits and avoid its risks. It will take a vigorous new politics.

I don’t think the general public has quite awakened to what’s happening. A global race to the AI future has begun, and it is largely proceeding without oversight or restraint. If people in America want to have some say in what that future will be like, and how quickly it arrives, we would be wise to speak up soon.

Climate change isn’t the only problem. Cocoa crops in Côte d’Ivoire and Ghana, where 60 percent of the world’s cocoa come from, may already be in “structural decline,” Debenham said, citing disease, aging cocoa trees, and illegal gold mining on farmland.

ore important, the farmers who tend to the crops can’t afford to invest in their farms to increase their yields and bolster resilience against climate change. The bleak outlook for cocoa farmers threatens to doom cocoa-growing in the region altogether. In Ghana, the average cocoa farmer is close to 50 years old. A new generation of farmers is needed to maintain the cocoa supply, but young people may just walk away from the industry.

Newer chocolate alternatives may provide more satisfying counterfeits. Win-Win isn’t the only start-up producing cocoa-free chocolate, which is similar in concept to animal-free meat. The company uses plant ingredients to emulate the flavor and texture of chocolate—as do its competitors Foreverland and Voyage Foods. Another firm, California Cultured, grows actual cacao cells in giant steel tanks.

Cocoa shortages will affect all kinds of chocolate, but mass-produced sweets may change beyond just the prices. The erratic temperatures brought about by climate change could change the flavor of beans, depending on where they are grown

Variability is a concern for commercial chocolate makers, who need to maintain consistent flavors across their products. They may counteract discrepancies among different batches of beans by combining them, then roasting them at a higher temperature,

Commercial chocolate makers may also tweak their recipes to amp up or mimic chocolate flavors without using more cocoa. These candies contain relatively little cacao to begin with; only 10 percent of a product’s weight must be cocoa in order to qualify as chocolate in the eyes of the FDA.

No matter how you look at it, the future of cocoa doesn’t look good. With less cocoa available all around, chocolate may become more expensive. For high-end chocolate brands, whose products use lots of cocoa, the recent price hikes are reportedly an existential threat.

So much of the appeal of cheap chocolate is that it’s always been there—whether in the form of a Hershey’s Kiss, Oreo cookies, a bowl of Cocoa Puffs, or the shell of a fondant-filled egg. “You grow up with those tastes. It’s hard to fathom how pervasive it has been,” Carodenuto said. Chocolate lovers have weathered minor tweaks to these candies over the years, but the shifts happening today may be less tolerable—or at the very least more noticeable. The change that has been hardest to ignore is that cheap chocolate is no longer that cheap.

Together with—and perhaps because of—its economic malaise, the country is living through a political earthquake. Germany’s wealth, its exemplary parliamentary democracy, and its big efforts to confront its Nazi history are no longer keeping nativist parties at bay.

Outside the EU, “made in Germany” goods struggle to find new clients. Exports to China have been roughly flat since mid-2015 and may even start to drop, as President Xi Jinping has made clear that he wants to make his country less dependent on European industry

The Federal Republic is the only big Euro member whose economy has not yet fully recovered to pre-pandemic levels. In fact, German GDP has roughly stagnated since 2019. And German manufacturing is the main problem: Industrial output lags pre-pandemic levels by some 5 percent.

The reason Germany ceased to be Europe’s growth engine has less to do with Russian energy than with changing circumstances in the export markets where the country’s industrial champions once flourished

In the 2000s, former Chancellor Gerhard Schröder slashed unemployment benefits and created a low-wage sector to help German exporters increase their market shares across Europe. Since then, many other European countries, including France and Italy, have made reforms to cut labor costs themselves, and Germany faces tougher competition in its biggest export market and has been running a trade deficit in goods with other EU members since 2020.

We are living through the end of German exceptionalism. The country’s economy is fragile, and the rise of the AfD makes its politics as unpredictable as those of Austria or Italy. In short, Germany is joining the European mainstream. And that means that trouble is ahead.

German car exports to China were down 24 percent in the first three months of 2023 compared with the same period in 2022

The U.S. is Germany’s second-largest market after the EU, accounting for 8.9 percent of its exports, but to top off Germany’s troubles, Washington is becoming more protectionist under Joe Biden.

The obvious solution is for Germany to spend more. Greater investment could raise productivity in a country where the railways have the worst delays among major European countries and cellphone and internet connectivity are underfunded

Investment could boost demand, and liberalizing policies could rebalance the economy toward services.

But a dogma of balanced budgets and debt avoidance remains deeply anchored among German politicians and voters.

Now Germany, whose effort to confront its Nazi history seemed to inoculate its politicians from having to deal with a large far-right party, is also falling prey to populism and nationalism.

ore and more governments across Europe are led by right-wing parties: in Italy, Sweden, Finland, and soon possibly Spain. In all of these countries, the center-right no longer has qualms about working with the far-right.

the penny has not yet dropped. Germany’s political elite hasn’t been moved to take the risky step of running up debts and liberalizing at the same time. But until it does, the country’s economy will likely lag European growth. And if the economy ceases to serve as a source of national pride, political forces may thrive by brandishing more nativist concepts of German identity.

The AfD’s rise to 20 percent in the polls—twice what it commanded in the 2021 parliamentary elections—has many causes. The party’s bastion is the formerly Communist east, where authoritarian attitudes and resentment of traditional parties feed off of feelings of having been the losers in Germany’s reunification

But something broader is going on. For Germans, the hallmark of good government is “Ruhe und Ordnung,” calm and order. The three parties in Scholz’s ruling coalition—the center-left SPD, the Greens, and the pro-business FDP—squabble over everything

The party has also benefited from a backlash against Germany’s progressive agenda on climate and migration

Despite the country’s reputation abroad as a climate champion, in a poll of seven European countries, Germans were the least willing among Europeans to switch to electric cars, cut meat consumption, or spend out of their own pockets to renovate their houses to save the climate.

As for migration, racist views are ingrained in Germany’s formerly Communist east

But the AfD has also been able to mobilize an anti-immigration electorate in big, rich, formerly West German states, such as Bavaria, the land of Siemens and Weisswurst, and Baden-Württemberg

the CDU will need to decide whether it will continue marginalizing the far-right or start working with it instead. The AfD is leading the polls in Thuringia and polling a strong second in Saxony

ermany is joining the European mainstream, with its political class struggling to counter rising far-right support and an economy that is no longer best-in-class. The two things that made postwar Germany unique in Europe are no more

the rise of the AfD is pushing Berlin to become an unreliable partner in Europe. The CDU was once the champion of Schengen, the EU’s policy to allow for passport-less travel across the continent. The party’s leader, Merz, clearly concerned about covering his right flank, has now called for reintroducing passport checks at Germany’s borders with other EU members, such as Czechia, in order to turn away migrants.

As the AfD criticizes the “reckless” spending of the Scholz government, the FDP and the chancellor are doubling down on spending cuts. Germany is becoming less willing to spend for itself and the EU.

The AfD may one day accede to national government, but it cannot do so on its own. To work in a coalition, the party will almost certainly have to compromise on its most radical policy propositions, such as closing the U.S. military base in Ramstein. But even with the AfD merely exerting pressure on German politics, the EU must sooner or later face an adjustment—to a future in which Germany is no longer an economic and political anchor so much as a source of instability.

Peter Thiel has lost interest in democracy.

Thiel has cultivated an image as a man of ideas, an intellectual who studied philosophy with René Girard and owns first editions of Leo Strauss in English and German. Trump quite obviously did not share these interests, or Thiel’s libertarian principles.

For years, Thiel had been saying that he generally favored the more pessimistic candidate in any presidential race because “if you’re too optimistic, it just shows you’re out of touch.” He scorned the rote optimism of politicians who, echoing Ronald Reagan, portrayed America as a shining city on a hill. Trump’s America, by contrast, was a broken landscape, under siege.

Thiel is not against government in principle, his friend Auren Hoffman (who is no relation to Reid) says. “The ’30s, ’40s, and ’50s—which had massive, crazy amounts of power—he admires because it was effective. We built the Hoover Dam. We did the Manhattan Project,” Hoffman told me. “We started the space program.”

Their failure to make the world conform to his vision has soured him on the entire enterprise—to the point where he no longer thinks it matters very much who wins the next election.

His libertarian critique of American government has curdled into an almost nihilistic impulse to demolish it.

“Voting for Trump was like a not very articulate scream for help,” Thiel told me. He fantasized that Trump’s election would somehow force a national reckoning. He believed somebody needed to tear things down—slash regulations, crush the administrative state—before the country could rebuild.

He admits now that it was a bad bet.

“There are a lot of things I got wrong,” he said. “It was crazier than I thought. It was more dangerous than I thought. They couldn’t get the most basic pieces of the government to work. So that was—I think that part was maybe worse than even my low expectations.”

eid Hoffman, who has known Thiel since college, long ago noticed a pattern in his old friend’s way of thinking. Time after time, Thiel would espouse grandiose, utopian hopes that failed to materialize, leaving him “kind of furious or angry” about the world’s unwillingness to bend to whatever vision was possessing him at the moment

Thiel. He is worth between $4 billion and $9 billion. He lives with his husband and two children in a glass palace in Bel Air that has nine bedrooms and a 90-foot infinity pool. He is a titan of Silicon Valley and a conservative kingmaker.

“Peter tends to be not ‘glass is half empty’ but ‘glass is fully empty,’” Hoffman told me.

he tells the story of his life as a series of disheartening setbacks.

He met Mark Zuckerberg, liked what he heard, and became Facebook’s first outside investor. Half a million dollars bought him 10 percent of the company, most of which he cashed out for about $1 billion in 2012.

Thiel made some poor investments, losing enormous sums by going long on the stock market in 2008, when it nose-dived, and then shorting the market in 2009, when it rallied

on the whole, he has done exceptionally well. Alex Karp, his Palantir co-founder, who agrees with Thiel on very little other than business, calls him “the world’s best venture investor.”

Thiel told me this is indeed his ambition, and he hinted that he may have achieved it.

He longs for radical new technologies and scientific advances on a scale most of us can hardly imagine

He longs for a world in which great men are free to work their will on society, unconstrained by government or regulation or “redistributionist economics” that would impinge on their wealth and power—or any obligation, really, to the rest of humanity

Did his dream of eternal life trace to The Lord of the Rings?

He takes for granted that this kind of progress will redound to the benefit of society at large.

More than anything, he longs to live forever.

Calling death a law of nature is, in his view, just an excuse for giving up. “It’s something we are told that demotivates us from trying harder,”

Thiel grew up reading a great deal of science fiction and fantasy—Heinlein, Asimov, Clarke. But especially Tolkien; he has said that he read the Lord of the Rings trilogy at least 10 times. Tolkien’s influence on his worldview is obvious: Middle-earth is an arena of struggle for ultimate power, largely without government, where extraordinary individuals rise to fulfill their destinies. Also, there are immortal elves who live apart from men in a magical sheltered valley.

But his dreams have always been much, much bigger than that.

Yes, Thiel said, perking up. “There are all these ways where trying to live unnaturally long goes haywire” in Tolkien’s works. But you also have the elves.

How are the elves different from the humans in Tolkien? And they’re basically—I think the main difference is just, they’re humans that don’t die.”

During college, he co-founded The Stanford Review, gleefully throwing bombs at identity politics and the university’s diversity-minded reform of the curriculum. He co-wrote The Diversity Myth in 1995, a treatise against what he recently called the “craziness and silliness and stupidity and wickedness” of the left.

Thiel laid out a plan, for himself and others, “to find an escape from politics in all its forms.” He wanted to create new spaces for personal freedom that governments could not reach

But something changed for Thiel in 2009

he people, he concluded, could not be trusted with important decisions. “I no longer believe that freedom and democracy are compatible,” he wrote.

ven more notable one followed: “Since 1920, the vast increase in welfare beneficiaries and the extension of the franchise to women—two constituencies that are notoriously tough for libertarians—have rendered the notion of ‘capitalist democracy’ into an oxymoron.”

By 2015, six years after declaring his intent to change the world from the private sector, Thiel began having second thoughts. He cut off funding for the Seasteading Institute—years of talk had yielded no practical progress–and turned to other forms of escape

The fate of our world may depend on the effort of a single person who builds or propagates the machinery of freedom,” he wrote. His manifesto has since become legendary in Silicon Valley, where his worldview is shared by other powerful men (and men hoping to be Peter Thiel).

Thiel’s investment in cryptocurrencies, like his founding vision at PayPal, aimed to foster a new kind of money “free from all government control and dilution

His decision to rescue Elon Musk’s struggling SpaceX in 2008—with a $20 million infusion that kept the company alive after three botched rocket launches—came with aspirations to promote space as an open frontier with “limitless possibility for escape from world politics

It was seasteading that became Thiel’s great philanthropic cause in the late aughts and early 2010s. The idea was to create autonomous microstates on platforms in international waters.

“There’s zero chance Peter Thiel would live on Sealand,” he said, noting that Thiel likes his comforts too much. (Thiel has mansions around the world and a private jet. Seal performed at his 2017 wedding, at the Belvedere Museum in Vienna.)

As he built his companies and grew rich, he began pouring money into political causes and candidates—libertarian groups such as the Endorse Liberty super PAC, in addition to a wide range of conservative Republicans, including Senators Orrin Hatch and Ted Cruz

Sam Altman, the former venture capitalist and now CEO of OpenAI, revealed in 2016 that in the event of global catastrophe, he and Thiel planned to wait it out in Thiel’s New Zealand hideaway.

When I asked Thiel about that scenario, he seemed embarrassed and deflected the question. He did not remember the arrangement as Altman did, he said. “Even framing it that way, though, makes it sound so ridiculous,” he told me. “If there is a real end of the world, there is no place to go.”

You’d have eco farming. You’d turn the deserts into arable land. There were sort of all these incredible things that people thought would happen in the ’50s and ’60s and they would sort of transform the world.”

None of that came to pass. Even science fiction turned hopeless—nowadays, you get nothing but dystopias

He hungered for advances in the world of atoms, not the world of bits.

Founders Fund, the venture-capital firm he established in 200

The fund, therefore, would invest in smart people solving hard problems “that really have the potential to change the world.”

This was not what Thiel wanted to be doing with his time. Bodegas and dog food were making him money, apparently, but he had set out to invest in transformational technology that would advance the state of human civilization.

He told me that he no longer dwells on democracy’s flaws, because he believes we Americans don’t have one. “We are not a democracy; we’re a republic,” he said. “We’re not even a republic; we’re a constitutional republic.”

“It was harder than it looked,” Thiel said. “I’m not actually involved in enough companies that are growing a lot, that are taking our civilization to the next level.”

Founders Fund has holdings in artificial intelligence, biotech, space exploration, and other cutting-edge fields. What bothers Thiel is that his companies are not taking enough big swings at big problems, or that they are striking out.

In at least 20 hours of logged face-to-face meetings with Buma, Thiel reported on what he believed to be a Chinese effort to take over a large venture-capital firm, discussed Russian involvement in Silicon Valley, and suggested that Jeffrey Epstein—a man he had met several times—was an Israeli intelligence operative. (Thiel told me he thinks Epstein “was probably entangled with Israeli military intelligence” but was more involved with “the U.S. deep state.”)

Buma, according to a source who has seen his reports, once asked Thiel why some of the extremely rich seemed so open to contacts with foreign governments. “And he said that they’re bored,” this source said. “‘They’re bored.’ And I actually believe it. I think it’s that simple. I think they’re just bored billionaires.”

he has a sculpture that resembles a three-dimensional game board. Ascent: Above the Nation State Board Game Display Prototype is the New Zealander artist Simon Denny’s attempt to map Thiel’s ideological universe. The board features a landscape in the aesthetic of Dungeons & Dragons, thick with monsters and knights and castles. The monsters include an ogre labeled “Monetary Policy.” Near the center is a hero figure, recognizable as Thiel. He tilts against a lion and a dragon, holding a shield and longbow. The lion is labeled “Fair Elections.” The dragon is labeled “Democracy.” The Thiel figure is trying to kill them.

When I asked Thiel to explain his views on democracy, he dodged the question. “I always wonder whether people like you … use the word democracy when you like the results people have and use the word populism when you don’t like the results,” he told me. “If I’m characterized as more pro-populist than the elitist Atlantic is, then, in that sense, I’m more pro-democratic.”

“I couldn’t find them,” he said. “I couldn’t get enough of them to work.

He said he has no wish to change the American form of government, and then amended himself: “Or, you know, I don’t think it’s realistic for it to be radically changed.” Which is not at all the same thing.

When I asked what he thinks of Yarvin’s autocratic agenda, Thiel offered objections that sounded not so much principled as practical.

“I don’t think it’s going to work. I think it will look like Xi in China or Putin in Russia,” Thiel said, meaning a malign dictatorship. “It ultimately I don’t think will even be accelerationist on the science and technology side, to say nothing of what it will do for individual rights, civil liberties, things of that sort.”

Still, Thiel considers Yarvin an “interesting and powerful” historian

he always talks about is the New Deal and FDR in the 1930s and 1940s,” Thiel said. “And the heterodox take is that it was sort of a light form of fascism in the United States.”

Yarvin, Thiel said, argues that “you should embrace this sort of light form of fascism, and we should have a president who’s like FDR again.”

Did Thiel agree with Yarvin’s vision of fascism as a desirable governing model? Again, he dodged the question.

“That’s not a realistic political program,” he said, refusing to be drawn any further.

ooking back on Trump’s years in office, Thiel walked a careful line.

A number of things were said and done that Thiel did not approve of. Mistakes were made. But Thiel was not going to refashion himself a Never Trumper in retrospect.

“I have to somehow give the exact right answer, where it’s like, ‘Yeah, I’m somewhat disenchanted,’” he told me. “But throwing him totally under the bus? That’s like, you know—I’ll get yelled at by Mr. Trump. And if I don’t throw him under the bus, that’s—but—somehow, I have to get the tone exactly right.”

Thiel knew, because he had read some of my previous work, that I think Trump’s gravest offense against the republic was his attempt to overthrow the election. I asked how he thought about it.

“Look, I don’t think the election was stolen,” he said. But then he tried to turn the discussion to past elections that might have been wrongly decided. Bush-Gore in 2000, for instanc

He came back to Trump’s attempt to prevent the transfer of power. “I’ll agree with you that it was not helpful,” he said.

there is another piece of the story, which Thiel reluctantly agreed to discuss

Puck reported that Democratic operatives had been digging for dirt on Thiel since before the 2022 midterm elections, conducting opposition research into his personal life with the express purpose of driving him out of politic

Among other things, the operatives are said to have interviewed a young model named Jeff Thomas, who told them he was having an affair with Thiel, and encouraged Thomas to talk to Ryan Grim, a reporter for The Intercept. Grim did not publish a story during election season, as the opposition researchers hoped he would, but he wrote about Thiel’s affair in March, after Thomas died by suicide.

He deplored the dirt-digging operation, telling me in an email that “the nihilism afflicting American politics is even deeper than I knew.”

He also seemed bewildered by the passions he arouses on the left. “I don’t think they should hate me this much,”

he spoke at the closed-press event with a lot less nuance than he had in our interviews. His after-dinner remarks were full of easy applause lines and in-jokes mocking the left. Universities had become intellectual wastelands, obsessed with a meaningless quest for diversity, he told the crowd. The humanities writ large are “transparently ridiculous,” said the onetime philosophy major, and “there’s no real science going on” in the sciences, which have devolved into “the enforcement of very curious dogmas.”

“Diversity—it’s not enough to just hire the extras from the space-cantina scene in Star Wars,” he said, prompting laughter.

Nor did Thiel say what genuine diversity would mean. The quest for it, he said, is “very evil and it’s very silly.”

“the silliness is distracting us from very important things,” such as the threat to U.S. interests posed by the Chinese Communist Party.

“Whenever someone says ‘DEI,’” he exhorted the crowd, “just think ‘CCP.’”

Somebody asked, in the Q&A portion of the evening, whether Thiel thought the woke left was deliberately advancing Chinese Communist interests

“It’s always the difference between an agent and asset,” he said. “And an agent is someone who is working for the enemy in full mens rea. An asset is a useful idiot. So even if you ask the question ‘Is Bill Gates China’s top agent, or top asset, in the U.S.?’”—here the crowd started roaring—“does it really make a difference?”

About 10 years ago, Thiel told me, a fellow venture capitalist called to broach the question. Vinod Khosla, a co-founder of Sun Microsystems, had made the Giving Pledge a couple of years before. Would Thiel be willing to talk with Gates about doing the same?

Thiel feels that giving his billions away would be too much like admitting he had done something wrong to acquire them

He also lacked sympathy for the impulse to spread resources from the privileged to those in need. When I mentioned the terrible poverty and inequality around the world, he said, “I think there are enough people working on that.”

besides, a different cause moves him far more.

Should Thiel happen to die one day, best efforts notwithstanding, his arrangements with Alcor provide that a cryonics team will be standing by.

Then his body will be cooled to –196 degrees Celsius, the temperature of liquid nitrogen. After slipping into a double-walled, vacuum-insulated metal coffin, alongside (so far) 222 other corpsicles, “the patient is now protected from deterioration for theoretically thousands of years,” Alcor literature explains.

All that will be left for Thiel to do, entombed in this vault, is await the emergence of some future society that has the wherewithal and inclination to revive him. And then make his way in a world in which his skills and education and fabulous wealth may be worth nothing at all.

I wondered how much Thiel had thought through the implications for society of extreme longevity. The population would grow exponentially. Resources would not. Where would everyone live? What would they do for work? What would they eat and drink? Or—let’s face it—would a thousand-year life span be limited to men and women of extreme wealth?

“Well, I maybe self-serve,” he said, perhaps understating the point, “but I worry more about stagnation than about inequality.”

Thiel is not alone among his Silicon Valley peers in his obsession with immortality. Oracle’s Larry Ellison has described mortality as “incomprehensible.” Google’s Sergey Brin aspires to “cure death.” Dmitry Itskov, a leading tech entrepreneur in Russia, has said he hopes to live to 10,000.

. “I should be investing way more money into this stuff,” he told me. “I should be spending way more time on this.”

You haven’t told your husband? Wouldn’t you want him to sign up alongside you?“I mean, I will think about that,” he said, sounding rattled. “I will think—I have not thought about that.”

No matter how fervent his desire, Thiel’s extraordinary resources still can’t buy him the kind of “super-duper medical treatments” that would let him slip the grasp of death. It is, perhaps, his ultimate disappointment.

There are all these things I can’t do with my money,” Thiel said.

The ordinary fixes—the kind that draw on people’s will, and require eating less and moving more—rarely have a large or lasting effect. Indeed, America itself has suffered through a long, maddening history of failed attempts to change its habits on a national scale: a yo-yo diet of well-intentioned treatments, policies, and other social interventions that only ever lead us back to where we started

Through it all, obesity rates keep going up; the diabetes epidemic keeps worsening.

The most recent miracle, for Barb as well as for the nation, has come in the form of injectable drugs. In early 2021, the Danish pharmaceutical company Novo Nordisk published a clinical trial showing remarkable results for semaglutide, now sold under the trade names Wegovy and Ozempic.

Patients in the study who’d had injections of the drug lost, on average, close to 15 percent of their body weight—more than had ever been achieved with any other drug in a study of that size. Wadden knew immediately that this would be “an incredible revolution in the treatment of obesity.”

Many more drugs are now racing through development: survodutide, pemvidutide, retatrutide. (Among specialists, that last one has produced the most excitement: An early trial found an average weight loss of 24 percent in one group of participants.

In the United States, an estimated 189 million adults are classified as having obesity or being overweight

The drugs don’t work for everyone. Their major side effects—nausea, vomiting, and diarrhea—can be too intense for many patients. Others don’t end up losing any weight

For the time being, just 25 percent of private insurers offer the relevant coverage, and the cost of treatment—about $1,000 a month—has been prohibitive for many Americans.

The drugs have already been approved not just for people with diabetes or obesity, but for anyone who has a BMI of more than 27 and an associated health condition, such as high blood pressure or cholesterol. By those criteria, more than 140 million American adults already qualify

if this story goes the way it’s gone for other “risk factor” drugs such as statins and antihypertensives, then the threshold for prescriptions will be lowered over time, inching further toward the weight range we now describe as “normal.”

How you view that prospect will depend on your attitudes about obesity, and your tolerance for risk

The first GLP-1 drug to receive FDA approval, exenatide, has been used as a diabetes treatment for more than 20 years. No long-term harms have been identified—but then again, that drug’s long-term effects have been studied carefully only across a span of seven years

the data so far look very good. “These are now being used, literally, in hundreds of thousands of people across the world,” she told me, and although some studies have suggested that GLP-1 drugs may cause inflammation of the pancreas, or even tumor growth, these concerns have not borne out.

adolescents are injecting newer versions of these drugs, and may continue to do so every week for 50 years or more. What might happen over all that time?

“All of us, in the back of our minds, always wonder, Will something show up?  ” Although no serious problems have yet emerged, she said, “you wonder, and you worry.”

in light of what we’ve been through, it’s hard to see what other choices still remain. For 40 years, we’ve tried to curb the spread of obesity and its related ailments, and for 40 years, we’ve failed. We don’t know how to fix the problem. We don’t even understand what’s really causing it. Now, again, we have a new approach. This time around, the fix had better work.

The fen-phen revolution arrived at a crucial turning point for Wadden’s field, and indeed for his career. By then he’d spent almost 15 years at the leading edge of research into dietary interventions, seeing how much weight a person might lose through careful cutting of their calories.

But that sort of diet science—and the diet culture that it helped support—had lately come into a state of ruin. Americans were fatter than they’d ever been, and they were giving up on losing weight. According to one industry group, the total number of dieters in the country declined by more than 25 percent from 1986 to 1991.

Rejecting diet culture became something of a feminist cause. “A growing number of women are joining in an anti-diet movement,” The New York Times reported in 1992. “They are forming support groups and ceasing to diet with a resolve similar to that of secretaries who 20 years ago stopped getting coffee for their bosses.

Now Wadden and other obesity researchers were reaching a consensus that behavioral interventions might produce in the very best scenario an average lasting weight loss of just 5 to 10 percent

National surveys completed in 1994 showed that the adult obesity rate had surged by more than half since 1980, while the proportion of children classified as overweight had doubled. The need for weight control in America had never seemed so great, even as the chances of achieving it were never perceived to be so small.

Wadden wasn’t terribly concerned, because no one in his study had reported any heart symptoms. But ultrasounds revealed that nearly one-third of them had some degree of leakage in their heart valves. His “cure for obesity” was in fact a source of harm.

In December 1994, the Times ran an editorial on what was understood to be a pivotal discovery: A genetic basis for obesity had finally been found. Researchers at Rockefeller University were investigating a molecule, later named leptin, that gets secreted from fat cells and travels to the brain, and that causes feelings of satiety. Lab mice with mutations in the leptin gene—importantly, a gene also found in humans—overeat until they’re three times the size of other mice. “The finding holds out the dazzling hope,”

In April 1996, the doctors recommended yes: Dexfenfluramine was approved—and became an instant blockbuster. Patients received prescriptions by the hundreds of thousands every month. Sketchy wellness clinics—call toll-free, 1-888-4FEN-FEN—helped meet demand. Then, as now, experts voiced concerns about access. Then, as now, they worried that people who didn’t really need the drugs were lining up to take them. By the end of the year, sales of “fen” alone had surpassed $300 million.

It was nothing less than an awakening, for doctors and their patients alike. Now a patient could be treated for excess weight in the same way they might be treated for diabetes or hypertension—with a drug they’d have to take for the rest of their life.

the article heralded a “new understanding of obesity as a chronic disease rather than a failure of willpower.”

News had just come out that, at the Mayo Clinic in Minnesota, two dozen women taking fen-phen—including six who were, like Barb, in their 30s—had developed cardiac conditions. A few had needed surgery, and on the operating table, doctors discovered that their heart valves were covered with a waxy plaque.

Americans had been prescribed regular fenfluramine since 1973, and the newer drug, dexfenfluramine, had been available in France since 1985. Experts took comfort in this history. Using language that is familiar from today’s assurances regarding semaglutide and other GLP-1 drugs, they pointed out that millions were already on the medication. “It is highly unlikely that there is anything significant in toxicity to the drug that hasn’t been picked up with this kind of experience,” an FDA official named James Bilstad would later say in a Time cover story headlined “The Hot New Diet Pill.

“I know I can’t get any more,” she told Williams. “I have to use up what I have. And then I don’t know what I’m going to do after that. That’s the problem—and that is what scares me to death.” Telling people to lose weight the “natural way,” she told another guest, who was suggesting that people with obesity need only go on low-carb diets, is like “asking a person with a thyroid condition to just stop their medication.”

She’d gone off the fen-phen and had rapidly regained weight. “The voices returned and came back in a furor I’d never heard before,” Barb later wrote on her blog. “It was as if they were so angry at being silenced for so long, they were going to tell me 19 months’ worth of what they wanted me to hear. I was forced to listen. And I ate. And I ate. And ate.”

For Barb, rapid weight loss has brought on a different metaphysical confusion. When she looks in the mirror, she sometimes sees her shape as it was two years ago. In certain corners of the internet, this is known as “phantom fat syndrome,” but Barb dislikes that term. She thinks it should be called “body integration syndrome,” stemming from a disconnect between your “larger-body memory” and “smaller-body reality.

In 2003, the U.S. surgeon general declared obesity “the terror within, a threat that is every bit as real to America as the weapons of mass destruction”; a few months later, Eric Finkelstein, an economist who studies the social costs of obesity, put out an influential paper finding that excess weight was associated with up to $79 billion in health-care spending in 1998, of which roughly half was paid by Medicare and Medicaid. (Later he’d conclude that the number had nearly doubled in a decade.

In 2004, Finkelstein attended an Action on Obesity summit hosted by the Mayo Clinic, at which numerous social interventions were proposed, including calorie labeling in workplace cafeterias and mandatory gym class for children of all grades.

he message at their core, that soda was a form of poison like tobacco, spread. In San Francisco and New York, public-service campaigns showed images of soda bottles pouring out a stream of glistening, blood-streaked fat. Michelle Obama led an effort to depict water—plain old water—as something “cool” to drink.

Soon, the federal government took up many of the ideas that Brownell had helped popularize. Barack Obama had promised while campaigning for president that if America’s obesity trends could be reversed, the Medicare system alone would save “a trillion dollars.” By fighting fat, he implied, his ambitious plan for health-care reform would pay for itself. Once he was in office, his administration pulled every policy lever it could.

Michelle Obama helped guide these efforts, working with marketing experts to develop ways of nudging kids toward better diets and pledging to eliminate “food deserts,” or neighborhoods that lacked convenient access to healthy, affordable food. She was relentless in her public messaging; she planted an organic garden at the White House and promoted her signature “Let’s Move!” campaign around the country.

An all-out war on soda would come to stand in for these broad efforts. Nutrition studies found that half of all Americans were drinking sugar-sweetened beverages every day, and that consumption of these accounted for one-third of the added sugar in adults’ diets. Studies turned up links between people’s soft-drink consumption and their risks for type 2 diabetes and obesity. A new strand of research hinted that “liquid calories” in particular were dangerous to health.

when their field lost faith in low-calorie diets as a source of lasting weight loss, the two friends went in opposite directions. Wadden looked for ways to fix a person’s chemistry, so he turned to pharmaceuticals. Brownell had come to see obesity as a product of our toxic food environment: He meant to fix the world to which a person’s chemistry responded, so he started getting into policy.

The social engineering worked. Slowly but surely, Americans’ lamented lifestyle began to shift. From 2001 to 2018, added-sugar intake dropped by about one-fifth among children, teens, and young adults. From the late 1970s through the early 2000s, the obesity rate among American children had roughly tripled; then, suddenly, it flattened out.

although the obesity rate among adults was still increasing, its climb seemed slower than before. Americans’ long-standing tendency to eat ever-bigger portions also seemed to be abating.

sugary drinks—liquid candy, pretty much—were always going to be a soft target for the nanny state. Fixing the food environment in deeper ways proved much harder. “The tobacco playbook pretty much only works for soda, because that’s the closest analogy we have as a food item,

that tobacco playbook doesn’t work to increase consumption of fruits and vegetables, he said. It doesn’t work to increase consumption of beans. It doesn’t work to make people eat more nuts or seeds or extra-virgin olive oil.

Careful research in the past decade has shown that many of the Obama-era social fixes did little to alter behavior or improve our health. Putting calorie labels on menus seemed to prompt at most a small decline in the amount of food people ate. Employer-based wellness programs (which are still offered by 80 percent of large companies) were shown to have zero tangible effects. Health-care spending, in general, kept going up.

From the mid-1990s to the mid-2000s, the proportion of adults who said they’d experienced discrimination on account of their height or weight increased by two-thirds, going up to 12 percent. Puhl and others started citing evidence that this form of discrimination wasn’t merely a source of psychic harm, but also of obesity itself. Studies found that the experience of weight discrimination is associated with overeating, and with the risk of weight gain over time.

obesity rates resumed their ascent. Today, 20 percent of American children have obesity. For all the policy nudges and the sensible revisions to nutrition standards, food companies remain as unfettered as they were in the 1990s, Kelly Brownell told me. “Is there anything the industry can’t do now that it was doing then?” he asked. “The answer really is no. And so we have a very predictable set of outcomes.”

she started to rebound. The openings into her gastric pouch—the section of her stomach that wasn’t bypassed—stretched back to something like their former size. And Barb found ways to “eat around” the surgery, as doctors say, by taking food throughout the day in smaller portions

Bariatric surgeries can be highly effective for some people and nearly useless for others. Long-term studies have found that 30 percent of those who receive the same procedure Barb did regain at least one-quarter of what they lost within two years of reaching their weight nadir; more than half regain that much within five years.

if the effects of Barb’s surgery were quickly wearing off, its side effects were not: She now had iron, calcium, and B12 deficiencies resulting from the changes to her gut. She looked into getting a revision of the surgery—a redo, more or less—but insurance wouldn’t cover it

She found that every health concern she brought to doctors might be taken as a referendum, in some way, on her body size. “If I stubbed my toe or whatever, they’d just say ‘Lose weight.’ ” She began to notice all the times she’d be in a waiting room and find that every chair had arms. She realized that if she was having a surgical procedure, she’d need to buy herself a plus-size gown—or else submit to being covered with a bedsheet when the nurses realized that nothing else would fit.

Barb grew angrier and more direct about her needs—You’ll have to find me a different chair, she started saying to receptionists. Many others shared her rage. Activists had long decried the cruel treatment of people with obesity: The National Association to Advance Fat Acceptance had existed, for example, in one form or another, since 1969; the Council on Size & Weight Discrimination had been incorporated in 1991. But in the early 2000s, the ideas behind this movement began to wend their way deeper into academia, and they soon gained some purchase with the public.

“Our public-health efforts to address obesity have failed,” Eric Finkelstein, the economist, told me.

Others attacked the very premise of a “healthy weight”: People do not have any fundamental need, they argued, morally or medically, to strive for smaller bodies as an end in itself. They called for resistance to the ideology of anti-fatness, with its profit-making arms in health care and consumer goods. The Association for Size Diversity and Health formed in 2003; a year later, dozens of scholars working on weight-related topics joined together to create the academic field of fat studies.

As the size-diversity movement grew, its values were taken up—or co-opted—by Big Business. Dove had recently launched its “Campaign for Real Beauty,” which included plus-size women. (Ad Age later named it the best ad campaign of the 21st century.) People started talking about “fat shaming” as something to avoid

By 2001, Bacon, who uses they/them pronouns, had received their Ph.D. and finished a rough draft of a book, Health at Every Size, which drew inspiration from a broader movement by that name among health-care practitioners

But something shifted in the ensuing years. In 2007, Bacon got a different response, and the book was published. Health at Every Size became a point of entry for a generation of young activists and, for a time, helped shape Americans’ understanding of obesity.

Some experts were rethinking their advice on food and diet. At UC Davis, a physiologist named Lindo Bacon who had struggled to overcome an eating disorder had been studying the effects of “intuitive eating,” which aims to promote healthy, sustainable behavior without fixating on what you weigh or how you look

The heightened sensitivity started showing up in survey data, too. In 2010, fewer than half of U.S. adults expressed support for giving people with obesity the same legal protections from discrimination offered to people with disabilities. In 2015, that rate had risen to three-quarters.

In Bacon’s view, the 2000s and 2010s were glory years. “People came together and they realized that they’re not alone, and they can start to be critical of the ideas that they’ve been taught,” Bacon told me. “We were on this marvelous path of gaining more credibility for the whole Health at Every Size movement, and more awareness.”

that sense of unity proved short-lived; the movement soon began to splinter. Black women have the highest rates of obesity, and disproportionately high rates of associated health conditions. Yet according to Fatima Cody Stanford, an obesity-medicine physician at Harvard Medical School, Black patients with obesity get lower-quality care than white patients with obesity.

That system was exactly what Bacon and the Health at Every Size movement had set out to reform. The problem, as they saw it, was not so much that Black people lacked access to obesity medicine, but that, as Bacon and the Black sociologist Sabrina Strings argued in a 2020 article, Black women have been “specifically targeted” for weight loss, which Bacon and Strings saw as a form of racism

But members of the fat-acceptance movement pointed out that their own most visible leaders, including Bacon, were overwhelmingly white. “White female dietitians have helped steal and monetize the body positive movement,” Marquisele Mercedes, a Black activist and public-health Ph.D. student, wrote in September 2020. “And I’m sick of it.”

Tensions over who had the standing to speak, and on which topics, boiled over. In 2022, following allegations that Bacon had been exploitative and condescending toward Black colleagues, the Association for Size Diversity and Health expelled them from its ranks and barred them from attending its events.

As the movement succumbed to in-fighting, its momentum with the public stalled. If attitudes about fatness among the general public had changed during the 2000s and 2010s, it was only to a point. The idea that some people can indeed be “fit but fat,” though backed up by research, has always been a tough sell.

Although Americans had become less inclined to say they valued thinness, measures of their implicit attitudes seemed fairly stable. Outside of a few cities such as San Francisco and Madison, Wisconsin, new body-size-discrimination laws were never passed.

In the meantime, thinness was coming back into fashion

In the spring of 2022, Kim Kardashian—whose “curvy” physique has been a media and popular obsession—boasted about crash-dieting in advance of the Met Gala. A year later, the model and influencer Felicity Hayward warned Vogue Business that “plus-size representation has gone backwards.” In March of this year, the singer Lizzo, whose body pride has long been central to her public persona, told The New York Times that she’s been trying to lose weight. “I’m not going to lie and say I love my body every day,” she said.

Among the many other dramatic effects of the GLP-1 drugs, they may well have released a store of pent-up social pressure to lose weight.

If ever there was a time to debate that impulse, and to question its origins and effects, it would be now. But Puhl told me that no one can even agree on which words are inoffensive. The medical field still uses obesity, as a description of a diagnosable disease. But many activists despise that phrase—some spell it with an asterisk in place of the e—and propose instead to reclaim fat.

Everyone seems to agree on the most important, central fact: that we should be doing everything we can to limit weight stigma. But that hasn’t been enough to stop the arguing.

Things feel surreal these days to just about anyone who has spent years thinking about obesity. At 71, after more than four decades in the field, Thomas Wadden now works part-time, seeing patients just a few days a week. But the arrival of the GLP-1 drugs has kept him hanging on for a few more years, he said. “It’s too much of an exciting period to leave obesity research right now.”

When everyone is on semaglutide or tirzepatide, will the soft-drink companies—Brownell’s nemeses for so many years—feel as if a burden has been lifted? “My guess is the food industry is probably really happy to see these drugs come along,” he said. They’ll find a way to reach the people who are taking GLP‑1s, with foods and beverages in smaller portions, maybe. At the same time, the pressures to cut back on where and how they sell their products will abate.

the triumph in obesity treatment only highlights the abiding mystery of why Americans are still getting fatter, even now

Perhaps one can lay the blame on “ultraprocessed” foods, he said. Maybe it’s a related problem with our microbiomes. Or it could be that obesity, once it takes hold within a population, tends to reproduce itself through interactions between a mother and a fetus. Others have pointed to increasing screen time, how much sleep we get, which chemicals are in the products that we use, and which pills we happen to take for our many other maladies.

“The GLP-1s are just a perfect example of how poorly we understand obesity,” Mozaffarian told me. “Any explanation of why they cause weight loss is all post-hoc hand-waving now, because we have no idea. We have no idea why they really work and people are losing weight.”

The new drugs—and the “new understanding of obesity” that they have supposedly occasioned—could end up changing people’s attitudes toward body size. But in what ways

When the American Medical Association declared obesity a disease in 2013, Rebecca Puhl told me, some thought “it might reduce stigma, because it was putting more emphasis on the uncontrollable factors that contribute to obesity.” Others guessed that it would do the opposite, because no one likes to be “diseased.”

why wasn’t there another kind of nagging voice that wouldn’t stop—a sense of worry over what the future holds? And if she wasn’t worried for herself, then what about for Meghann or for Tristan, who are barely in their 40s? Wouldn’t they be on these drugs for another 40 years, or even longer? But Barb said she wasn’t worried—not at all. “The technology is so much better now.” If any problems come up, the scientists will find solutions.

Russia has undoubtedly suffered economically from the global downturn in energy prices and from economic sanctions following the annexation of the Crimea, but the degree of dependence, in particular energy dependence, that Western Europe has on Russia is highly significant.

For example, the Nord Stream pipeline laid in international waters along the Baltic from Russia to Germany, supplies a significant -- according to EU figures, 38.7% -- proportion of Western Europe's gas needs.

Russia desperately needs the foreign earnings this generates

Consequently, while the armies and individual battles might be smaller than those in World War II, the death toll, the loss of war-making material and both sides' ability to reduce everything in their paths to rubble would make a large-scale conflict far more wide-reaching and, in terms of recovery, longer-lasting than anything we have seen before.

Turkey, on Russia's southern border, joined the military alliance in 1952, and since the end of the Cold War, many of Russia's former Warsaw Pact allies, including Poland, the Czech Republic, Slovakia, Romania, Bulgaria and the Baltic States have signed up, too.

It's certainly in Putin's interests that the West cuts defense spending and has a diminished appetite for brinkmanship and it is perhaps understandable that a recently retired general should push for this to be reversed.

However, NATO's forces are deployed globally to a far greater extent than Russia's. And even acknowledging that Russia could achieve a temporary military advantage in, say, the Baltic, for how long and at what price?

the likelihood of a Kursk-style pitched battle between heavy armor is highly unlikely.

A real-life analysis of the Russian president's actions would suggest that he is being entirely rational and that his actions are those or an arch-realist who places the needs of his country first.

Such a war, employing ships, submarines and aircraft with truly global reach, would indeed be a world war and would pay scant attention to the difference between military and civilian targets: this would truly be a war among the peoples.

Despite Shirreff's warnings, the nightmare scenario of nuclear war is highly unlikely as neither side ultimately would wish to unleash destruction on that scale.

This would be total war, waged on every imaginable front, from the internet and the stock market to outer space.

built in 1020 by Werner

in the Aargau

in what is now Switzerland

rebelled against the German king Otto I in 950

Rudolf II of Habsburg (died 1232)

Rudolf III’s descendants, however, sold their portion, including Laufenburg, to Albert IV’s descendants before dying out in 1408

Albert IV’s son Rudolf IV of Habsburg was elected German king as Rudolf I in 1273. It was he who, in 1282, bestowed Austria and Styria on his two sons Albert (the future German king Albert I) and Rudolf (reckoned as Rudolf II of Austria). From that date the agelong identification of the Habsburgs with Austria begins

the most formidable dynasty was no longer the Habsburg but the Bourbon. In the War of the Grand Alliance (1689–97) the rising powers that 100 years earlier had been Habsburg Spain’s principal enemies and feeble France’s most fluent encouragers