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If that continues, it will take five years, the length of a British parliament, for AI to become a thousand times more powerful

no one has yet determined how to solve the problem of “alignment” between AI and human values, or which human values those would be. Without that, says the leading US researcher Eliezer Yudkowsky, “the AI does not love you, nor does it hate you, and you are made of atoms it can use for something else”.

The rise of AI is almost certainly one of the two main events of our lifetimes, alongside the acceleration of climate change

open up a new age in which the most successful humans will merge their thinking intimately with that of machines

The stately world of making law and policy is about to be overtaken at great speed, as are many other aspects of life, work and what it means to be human when we are no longer the cleverest entity around.

what should we do about it in the UK? First, we have to ensure we, with allied nations, are among the leaders in this field. That will be a huge economic opportunity, but it is also a political and security imperative

Last week, ministers published five principles to inform responsible development of AI, and a light-touch regulatory regime to avoid the more prescriptive approach being adopted in the EU.

we will need much greater sovereign AI capabilities than currently envisaged. This should be done whatever the cost. Within a few years it will seem ridiculous that we are spending £100 billion on a railway line while being short of a few billion to be a world leader in supercomputing.

Before AI turns into AGI (artificial general intelligence) the UK has a second responsibility: to take the lead on seeking global agreements on the safe and responsible development of AI

even China should agree never to let AI come near the control of nuclear weapons or the creation of dangerous pathogens. The letter from the experts will not stop the AI race, but it should lead to more work on future safety and in parti

Last week, ministers said we should not fear AI. In reality, there is a lot to fear. But like an astronaut on a launch-pad, we should feel fear and excitement at the same time. This rocket is lifting off, it will accelerate, and we all need to prepare now.

Meanwhile, STEM’s conquest of the university has wrecked old humanistic homes. As Nathan Heller’s recent article in The New Yorker documented, the English department is now an unpopulated, undesired version of its former self.

That her book doesn’t feel terribly urgent perhaps speaks to a fundamental weakness within humanism.

Bakewell self-identifies as a stalwart of humanism, but even she concedes that this is an elusive label. “Humanism is personal, and it is a semantic cloud of meanings and implications, none attachable to any particular theorist or practitioner.” Without a pithy definition or clear doctrine, she can manage only to narrow humanism down to three characteristics: freethinking, hope, and inquiry

By setting aside all thoughts of the afterlife, the humanist can focus on making the most of earthly existence, pursuing happiness and mitigating suffering.

the belief that people can feel genuine solidarity for one another, despite their differences—but this is a paper-thin morality that hardly survives the skepticism that Bakewell celebrates.

she would clearly like humanism to be more substantial than it actually is. The ism suffix in Bakewell’s subject is, in fact, a bit of misdirection, because it implies a political idea or perhaps a coherent worldview

Humanism is not a synonym for liberalism or philosophical pragmatism. It more accurately describes a temperament

he humanistic canon she constructs sprawls to include the likes of David Hume, Voltaire, Thomas Paine, Frederick Douglass, John Stuart Mill, Zora Neale Hurston, and Thomas Mann.

It can sometimes be a struggle to see the commonalities, other than some degree of skepticism about religion, an underlying decency, and a general cheeriness in the midst of dreary struggles against the prevailing politics of their times.

While it’s true that freethinking is the enemy of authoritarianism, humanism suffers from a tendency to oversell itself. It doesn’t have a good track record of effectively standing up to facism,

in the current American context, right-wing ethno-nationalists have cynically draped themselves in the trappings of humanism. The likes of Ben Shapiro and Tucker Carlson present themselves as the true defenders of freethinking and open inquiry.

Self-doubt, a cheerful disposition, and a joyous pursuit of knowledge are qualities that might make for wise leaders, but can also produce hapless political combatants. Or, as Mann once declared: “In all humanism there is an element of weakness, which … may be its ruin.”

humanism is more like religion than Bakewell is prepared to admit. At its best, it is a secular faith. Its universalist spirit and open-mindedness are ethical stances. Its wishful optimism about human possibility can provide spiritual nourishment in a fallen world.

This makes it a style of dissidence well suited for the age of AI. The humanist becomes the contrarian who insists on maintaining that which automation seeks to render obsolete: the faculties of the independent mind, the very core of intellectual personhood.

If Mr. Kahlenberg had his way, college admissions would be upended.

His basic recipe: Get rid of preferences for alumni children, as well as children of faculty, staff and big donors. Say goodbye to recruited athletes in boutique sports like fencing. Increase community college transfers. Give a break to students who have excelled in struggling schools, who have grown up in neighborhoods of concentrated poverty, in families with low income, or better yet, low net worth. Pump up financial aid. Look for applicants in towns that do not normally send students to highly selective colleges.

elite colleges have become fortresses for the rich, he said. Harvard had “23 times as many rich kids as poor kids,” Mr. Kahlenberg testified in 2018 at the federal court trial in the Harvard case, referring to a 2017 paper by Raj Chetty, then a Stanford economist, and colleagues.

his 2012 study that found seven of 10 leading universities were able to return to previous levels of diversity through race-neutral means.

In 2020, Berkeley boasted that it had admitted its most diverse class in 30 years, with offers to African American and Latino students rising to the highest numbers since at least the late-1980s, without sacrificing academic standards.

In a simulation of the class of 2019, he found that the share of Black students at Harvard would drop to 10 percent from 14 percent, but the share of white students would also drop, to 33 percent from percent from 40 percent, mainly because of the elimination of legacy and other preferences. The share of Hispanic students would rise to 19 percent from 14 percent and the Asian American share would rise to 31 percent from 24 percent.

The share of “advantaged” students (parents with a bachelor’s degree, family income over $80,000, living in a neighborhood not burdened by concentrated poverty) would make up about half of the class, from 82 percent. SAT scores would drop to the 98th percentile from the 99th.

In the affirmative action trial, Harvard said that Mr. Kahlenberg’s model would produce too little diversity, and water down academic quality. Its actual class of 2026 is 15.2 percent African American, 12.6 percent Hispanic and 27.9 percent Asian American.

Edward Blum, the conservative activist behind the lawsuits against Harvard and U.N.C., said Mr. Kahlenberg came to his attention when “The Remedy” was published. The focus on class seemed like a powerful bridge between the left and the right, Mr. Blum said

Dr. Laycock, of the University of Virginia, expects that once the Supreme Court rules, conservative groups that are now promoting race-neutral alternatives will claim they are racial proxies and turn against them. “Everybody knows that’s why it’s being used,” he said. (Mr. Blum said his group will not, though other conservative groups could do so.)

There is no “We Believe” sign in the yard. But on the living room wall, a sign says, “Live simply, dream big, be grateful, give love, laugh lots.”

In that spirit, his stubborn campaign might be traced to being the son of a pastor whose family could afford to make him a Harvard graduate, twice over. “I do have some measure of class guilt,” he said. “I wish people who are far richer than I am had more class guilt.”

If all of this sounds familiar, it’s because we basically saw this same environmental dynamic play out several years ago with tech’s last big obsession: Crypto and web3. In that case, Bitcoin emerged as the industry’s obvious environmental sore spot due to the vast amounts of energy needed to mine coins in its proof of work model. Some estimates suggest Bitocin alone requires more energy every year than Norway’s annual electricity consumption.

rs of criticism from environmental activists however led the crypto industry to make some changes. Ethereum, the second largest currency on the blockchain, officially switched last year to a proof of stake model which supporters claim could reduce its power usage by over 99%. Other smaller coins similarly were designed with energy efficiency in mind. In the grand scheme of things, large language models are still in their infancy and it’s far from certain how its environmental report card will play out.

the First Amendment and Bill of Rights—cornerstones of the American system of government—limit what laws Congress may pass and therefore what the majority may do. That is their whole point.

Clearly what we want is not unlimited majority rule, but liberal democracy: a majority vote, within the context of protections for fundamental rights. This is still “democracy” in the literal sense—rule by the people—but that rule is limited by liberal principles.

The usual case for liberal democracy is captured in a quote from 20th-century political philosopher Judith Shklar that has been making the rounds recently: “Liberalism is monogamously, faithfully, and permanently married to democracy—but it is a marriage of convenience.”

The idea is that it is impossible to maintain a liberal system—“liberal” in the political philosopher’s sense, meaning a free society—without representative government and other democratic institutions. But democracy is merely a means to an end. It is justified not by an imperative to manifest some kind of mystical collective will, but as a safeguard for individual liberty.

Both liberalism and democracy—as words and as ideas—have their roots in the classical world, and there are two stories from Ancient Greece and Rome that define their proper relationship.

These two stories sum up the promise and peril of rule by the people. The whole trick of liberal democracy is to create a system that will protect us from Tarquin, while protecting Socrates from us.

Yet I think we can encourage a little more love in the marriage between liberalism and democracy by finding some common ground in the basic principles behind them.

The principle behind representative government is the same as that underlying liberalism: the equal rights of individuals. Democracy is founded on the recognition that some men are not born with saddles on their backs, as Thomas Jefferson put it, while others are not born booted and spurred. If all men are created equal, with equal rights, they are entitled to an equal say over how they are governed and by whom.

The populist leader pretends to speak for the people and to champion their interests, but he always defines “the people” to mean his faction. They alone are the real Americans who represent the heartland. Everyone else doesn’t count: Their preferences are presumed to be manufactured and illegitimate—and their rights and interests do not have to be respected.

there is a deeper common value that bonds liberalism and democracy. In a free society, respect for the rights of others requires that you deal with them through bargaining and persuasion rather than coercion. Same for democracy.

A liberal democracy protects against democratic abuses of power through a system of checks and balances, in which some democratic institutions are given the power and incentive to limit other democratic institutions

The reward of a democratic system is not just that it limits the power of our leaders, but that it holds them to account for their mistakes and allows a country to reverse their errors.

Freedom of speech has been called the “first freedom,” but part of the point of protecting speech is to allow us to criticize our leaders so we can then vote them out. Historically, the vote is the first freedom and the origin of all the others

This is why it is so important to protect liberal democracy when any party threatens it and why voters are right to make this a higher priority than other, seemingly more immediate problems

The book recounts four peak periods in the conflict between white Alabamians and the federal government: the wild rush, in the early 19th century, to seize and settle lands that belonged to the Creek Nation; Reconstruction; the reassertion of white supremacy under Jim Crow; and the attempts of Wallace and others to nullify the civil rights reforms of the 1950s and 1960s.

Throughout, as Cowie reveals, white Southerners portrayed the oppression of Black people and Native Americans not as a repudiation of freedom, but its precondition, its very foundation.

Following the election of Ulysses S. Grant in 1868 and the ratification of the 14th and 15th Amendments, the federal presence in the South was finally robust. So was the spirit of local defiance. In post-bellum Barbour County, Cowie writes, “peace only prevailed for freed people when federal troops were in town” — and then only barely

White men did all this in Barbour County, by design and without relent, and Cowie’s account of their acts is unsparing. His narrative is immersive; his characters are vividly rendered, whether familiar figures like Andrew Jackson or mostly forgotten magnates like J.W. Comer, a plantation owner who became, in the late 19th century, the architect of a vast, sadistic and extremely lucrative system of convict labor

Thus were white men, in the words of the scholar Orlando Patterson, whom Cowie quotes, “free to brutalize.” Thus were they free “to plunder and lay waste and call it peace, to rape and humiliate, to invade, conquer, uproot and degrade.”

the chaos in Alabama offended Jackson’s sense of discipline and made a mockery of his treaties with the Creeks. Beginning in 1832, and in fits and starts over the following year, federal troops looked to turn back or at least contain the white wave. Instead, their presence touched off a series of violent reprisals, created a cast of martyrs and folk heroes, and gave rise to the mythology of white victimization. Self-rule and local authority — rhetorical wrapping for this will to power — had become articles of faith, fervid as any religious belief.

The federal government is a character here, too — sometimes in a central role, sometimes remote to the point of irrelevance, and all too often feckless in the defense of a more inclusive, affirmative model of freedom.

When Grant stepped up the enforcement of voting rights, whites in Eufaula, Barbour County’s largest town, massacred Black citizens and engaged in furious efforts to manipulate or overturn elections. As in the 1830s, the federal government showed little stamina for the struggle. Republican losses in 1874 augured another retreat, this time for the better part of a century. In the vacuum, Cowie explains, emerged “the neoslavery of convict leasing, the vigilante justice of lynching, the degradation and debt of sharecropping and the official disenfranchisement of Blacks” under Jim Crow.

Wallace, as Cowie makes clear, had bigger ambitions. Instinctively, he knew that his brand of politics had an audience anywhere that white Americans were under strain and looking for someone to blame. Wallace became the sneering face of the backlash against the Civil Rights Act and the Voting Rights Act, against any law or court ruling or social program that aimed to include Black Americans more fully in our national life. Racism was central to his appeal, yet its common note was grievance; the common enemies were elites, the press and the federal government. “Being a Southerner is no longer geographic,” he declared in 1964, during the first of his four runs for the White House. “It’s a philosophy and an attitude.”

That attitude, we know, is pervasive now — a primal, animating principle of conservative politics. We hear it in conspiracy theories about the “deep state”; we see it in the actions of Republican officials like Gov. Ron DeSantis of Florida, who built a case for his re-election in 2022 by banning — in the name of “individual freedom” — classroom discussions of gender, sexuality and systemic racism.

In explaining how we got here, “Freedom’s Dominion” emphasizes race above economics, but this seems fitting. The fixation on the free market, so long a defining feature of the Republican Party, has loosened its hold; taxes and regulations do not boil the blood as they once did. In their place is a stew of resentments as raw as any since George Wallace stirred the pot.

They also need to hear about the semi-genocidal nature of the Russian attack on Ukraine—not just the extensive torture, murder, and rape of the civilian population, but the kidnapping of thousands of children, and the attempt to wipe out Ukrainian language and culture.

They need to hear how staunchness now, even in the face of nuclear threats, is infinitely better than a large-scale, possibly global war in a decade

Americans and Europeans need to hear about the consequences if Russia were to crush Ukraine; about the invasions and depredations that would surely come next in the Baltic states, and quite likely beyond; about the conclusions a no less ruthless Chinese government would draw; and about how a failure to take a stand here would mean something much bigger and more dangerous in a few years’ time

Americans also need to hear a celebration not only of Ukrainian courage and tenacity, but of their skill.

Modern politicians very rarely speak this way, but they need to try

The opposition to aid to Ukraine is still divided, hampered by its own crankiness and embittered introversion, and undermined daily by Russian barbarity, and no less, the astonishing Julius Streicher–like candor with which its propagandists howl for the blood of innocents.

Ukraine’s struggle for freedom and for its very existence is the struggle of a much larger order, not just in Europe but globally, and indeed of the human spirit.

The situation calls for sound policy, no doubt; it also calls for eloquence that soars. There is an epic speech to be delivered here; let us hope that there is someone who can deliver it.

Recent experiments suggest that XBB paid a steep price for its power to evade immunity. The mutations allow it to escape antibodies by altering the shape of the protein, called spike, that covers its surface. But some of those mutations also make it harder for XBB spike proteins to grab tightly to cells — the first step required for an infection.

That loose grip may have lessened XBB’s advantage against other forms of the virus. In late 2022, it jostled alongside a number of other Omicron subvariants. In Singapore, XBB caused a surge in October, for example, while remaining rare in many other parts of the world.

As XBB multiplied, it continued to mutate into new forms. The earliest samples of XBB.1.5 were isolated in October in New York. The new subvariant gained one crucial mutation, known as F486P.

Yunlong Cao of Peking University and his colleagues tested out XBB.1.5 in dishes of cells, comparing how it fared against earlier forms of XBB. The researchers found that the F486P mutation allowed XBB.1.5 to grab tightly to cells again. But the new subvariant could still evade antibodies as well as earlier forms of XBB.

In Connecticut, for example, Nathan Grubaugh at Yale University and his colleagues found that by mid-December, other Omicron subvariants were falling. Only XBB.1.5 cases were growing. Dr. Grubaugh estimates that it is about 20 percent more transmissible than BQ.1, which had been the dominant form.

How severe XBB.1.5 infections are compared with other forms of the coronavirus is not yet clear. “It’s serious,” Dr. Grubaugh said. “I just don’t necessarily know if it’s really more serious than some of the other Omicron lineages in terms of the overall impact.”

XBB.1.5 has already spread to other countries, and is growing rapidly in Germany, Denmark and elsewhere in Europe

Scientists are already scanning new sequences being uploaded to an international database called GISAID in the hopes of spotting an upgraded version of XBB.1.5. But their job is getting harder because governments are pulling back on sequencing efforts. “Worldwide, sequencing has taken a real hit,” Dr. Peacock said.

The United States, which once lagged behind other nations, has managed to maintain a fairly strong sequencing effort. Without it, Dr. Peacock said, XBB.1.5 might have stayed below the radar for much longer. If XBB.1.5’s next generation is evolving somewhere with little sequencing, it may go undetected for some time to come.

Dr. Lemieux said that paring back on sequencing was a mistake, given how many infections and deaths the virus is still causing. “This is a part of public health,” he said.

Could the West have done more to avert the disaster of the last decade? Its financial leverage over Russia weakened in the early 2000s when rocketing gas and oil prices raised the Russian economy off its knees. Economic sanctions, at least those introduced before 2022, served mainly to foster Russia’s determination to become self-sufficient in every sector of production

Western political diplomatic levers were stronger, but the western powers missed many crucial chances. London should not have become the laundromat for Russian dirty money.

In his own way, president Joe Biden did just as badly in 2021 by encouraging Ukraine to seek membership of Nato without taking proper precautions – and helping Zelensky take them in time too – against the possible negative Russian reaction

The United States’ leadership has been just as woeful. President Donald Trump liked to schmooze with Putin as if on a boys’ night out rather than pinning him down on points of disagreement.

A coarsening of relations between the West and a resurgent Russia was always likely, but western politicians could have moderated the process

In all this, it is neither Trump nor Biden who have shown the least prudence but Putin.

Now, after years of vacillation, the West has something like a systematic policy towards Russia and is supplying Ukraine with some of the military defence equipment it sorely needs and deserves. Better late than never.

What happened in 2012, when the oldest Gen-Z babies were in their middle teens? That was the year Facebook acquired Instagram and young people flocked to the latter site. It was also “the beginning of the selfie era.”

Mr. Haidt’s research, confirmed by that of others, shows that depression rates started to rise “all of a sudden” around 2013, “especially for teen girls,” but “it’s only Gen Z, not the older generations.” If you’d stopped collecting data in 2011, he says, you’d see little change from previous years. “By 2015 it’s an epidemic.” (His data are available in an open-source document.)

Mr. Haidt imagines “literally launching our children into outer space” and letting their bodies grow there: “They would come out deformed and broken. Their limbs wouldn’t be right. You can’t physically grow up in outer space. Human bodies can’t do that.” Yet “we basically do that to them socially. We launched them into outer space around the year 2012,” he says, “and then we expect that they will grow up normally without having normal human experiences.”

Social media and selfies hit a generation that had led an overprotected childhood, in which the age at which children were allowed outside on their own by parents had risen from the norm of previous generations, 7 or 8, to between 10 and 12.

That meant the first social-media generation was one of “weakened kids” who “hadn’t practiced the skills of adulthood in a low-stakes environment” with other children. They were deprived of “the normal toughening, the normal strengthening, the normal anti-fragility.

Now, their childhood “is largely just through the phone. They no longer even hang out together.” Teenagers even drive less than earlier generations did.

Mr. Haidt especially worries about girls. By 2020 more than 25% of female teenagers had “a major depression.” The comparable number for boys was just under 9%.

The comparable numbers for millennials at the same age registered at half the Gen-Z rate: about 13% for girls and 5% for boys. “Kids are on their devices all the time,”

Most girls, by contrast, are drawn to “visual platforms,” Instagram and TikTok in particular. “Those are about display and performance. You post your perfect life, and then you flip through the photos of other girls who have a more perfect life, and you feel depressed.

He calls this phenomenon “compare and despair” and says: “It seems social because you’re communicating with people. But it’s performative. You don’t actually get social relationships. You get weak, fake social links.”

Mr. Haidt says he has no antipathy toward the young, and he calls millennials “amazing.”

To illustrate his point about Gen Z, Mr. Haidt challenges people to name young people today who are “really changing the world, who are doing big things that have an impact beyond their closed ecosystem.”

He can think of only two, neither of them American: Greta Thunberg, 19, the Swedish climate militant, and Malala Yousafzai, 25, the Pakistani advocate for female education

I’m predicting that they will be less effective, less impactful, than previous generations.” Why? “You should always keep your eye on whether people are in ‘discover mode’ or ‘defend mode.’ ” In the former mode, you seize opportunities to be creative. In the latter, “you’re not creative, you’re not future-thinking, you’re focused on threats in the present.”

University students who matriculated starting in 2014 or so have arrived on campus in defend mode: “Here they are in the safest, most welcoming, most inclusive, most antiracist places on the planet, but many of them were acting like they were entering some sort of dystopian, threatening, immoral world.”

56% of liberal women 18 to 29 responded affirmatively to the question: Has a doctor or other healthcare provider ever told you that you have a mental health condition? “Some of that,” Mr. Haidt says, “has to be just self-presentational,” meaning imagined.

This new ideology . . . valorizes victimhood. And if your sub-community motivates you to say you have an anxiety disorder, how is this going to affect you for the rest of your life?” He answers his own question: “You’re not going to take chances, you’re going to ask for accommodations, you’re going to play it safe, you’re not going to swing for the fences, you’re not going to start your own company.”

Whereas millennial women are doing well, “Gen-Z women, because they’re so anxious, are going to be less successful than Gen-Z men—and that’s saying a lot, because Gen-Z men are messed up, too.”

The problem, he says, is distinct to the U.S. and other English-speaking developed countries: “You don’t find it as much in Europe, and hardly at all in Asia.” Ideas that are “nurtured around American issues of race and gender spread instantly to the U.K. and Canada. But they don’t necessarily spread to France and Germany, China and Japan.”

something I hear from a lot of managers, that it’s very difficult to supervise their Gen-Z employees, that it’s very difficult to give them feedback.” That makes it hard for them to advance professionally by learning to do their jobs better.

“this could severely damage American capitalism.” When managers are “afraid to speak up honestly because they’ll be shamed on Twitter or Slack, then that organization becomes stupid.” Mr. Haidt says he’s “seen a lot of this, beginning in American universities in 2015. They all got stupid in the same way. They all implemented policies that backfire.”

Mr. Haidt, who describes himself as “a classical liberal like John Stuart Mill,” also laments the impact of social media on political discourse

“Social media is incompatible with liberal democracy because it has moved conversation, and interaction, into the center of the Colosseum. We’re not there to talk to each other. We’re there to perform” before spectators who “want blood.”

Is there a solution? “I’d raise the age of Internet adulthood to 16,” he says—“and enforce it.”

By contrast, “life went onto phone-based apps 10 years ago, and the protections we have for children are zero, absolutely zero.” The damage to Generation Z from social media “so vastly exceeds the damage from Covid that we’re going to have to act.”

Gen Z, he says, “is not in denial. They recognize that this app-based life is really bad for them.” He reports that they wish they had childhoods more like those of their parents, in which they could play outside and have adventur

the mid-2010s saw the beginnings of a turnaround that has continued ever since. By 2019, households headed by Millennials were making considerably more money than those headed by the Silent Generation, Baby Boomers, and Generation X at the same age, after adjusting for inflation.

That year, according to the Current Population Survey, administered by the U.S. Census Bureau, income for the median Millennial household was about $9,000 higher than that of the median Gen X household at the same age, and about $10,000 more than the median Boomer household, in 2019 dollars.

Booms and recessions push incomes up and down, but although many media stories have tended to associate Millennials almost exclusively with the latter, they’ve now experienced both, and in a big way: Increases in income since 2014 have been steep.

ed since Millennials became adults. The Affordable Care Act extended health-care coverage, and federal-government support during the pandemic actually caused poverty to fall in 2020 and 2021

since 2014. By my analysis, Black and Latino Americans ages 25 to 44 in 2021 were making more money than Black and Latino Silents, Boomers, and Gen Xers at the same age. The U.S. is not without economic inequities, many of them racial. But Black and Latino Millennials are not falling behind previous generations when it comes to their income. Instead, most are getting ahead

Millennial men, on average, have not seen the income increases that Millennial women have (more on that later)—a divergence at least partly explained by the growing gap in educational attainment between men and women

the median income of Americans with a four-year college degree has steadily risen while the income of those with only a high-school degree has fallen. This trend is not new, though it is troubling.

The Great Recession was no doubt a more harrowing experience for young adults than the recession Gen X faced, but the income stagnation that followed it nonetheless lasted only a few years. Over the past half century, the longest period of falling or stagnant wages was from the ’70s to the mid-’90s, when Boomers were young workers.

poverty is not any more common among Millennials today than it was among previous generations.

lthough the concept of equality may seem intuitive, it is surprisingly difficult to pin down with any precision.

“When people speak of equality,” McMahon stresses, “they invariably speak of the equality of something.” The central question is the one so famously and pithily posed by the economist Amartya Sen in his landmark 1979 lecture of the same name: “Equality of what?”

McMahon surmises that our foraging forebears were probably staunch egalitarians, at least when it came to the division of labor within their communities.

even in the idyllic days of prehistory, there was a catch. Early humans probably adhered to what the anthropologist Christopher Boehm called an “egalitarian hierarchy,” in which, in McMahon’s words, “the many combine to dominate the few,” exiling those who challenged the pecking order (or so those cave paintings seem to suggest)

And even though hunter-gatherers probably treated suitably compliant members of their own clans equitably, in-group/out-group rivalries “undoubtedly played a role in the cohesion” that each group achieved internally

our ancestors maintained order within by sewing discord without, vying violently with competing clans and expelling (or even killing) upstarts who threatened to distinguish themselves too dramatically from the pack.

The very concept of equality, which requires both difference and sameness, generates comparable tensions in almost every society in which some version of it is promoted.

, the temptation to maintain harmony within a group by degrading those outside it has been irresistible for centuries — and remains so to this day.

But if the monotheistic religions “proclaimed fellowship among the children of God,” McMahon wryly clarifies, they were also “quick to banish from the family those who rejected the faith.

John Calvin himself minced no words on this point. “All are not created … equal,” he wrote.

Everyone was equal in post-revolution France — except for those who were not.

Many of the most prominent thinkers of the period considered women and people of color too irrational to merit legal recognition

in the 1700s, French revolutionaries inspired by the Enlightenment maintained that equality was a right bestowed on every man by virtue of his intrinsically rational nature

“We want to be treated with fairness and on equal terms, accorded recognition and respect,” McMahon writes. “But at the same time we seek distinction, aiming to set ourselves apart.

If equality so ineluctably contains the seeds of its own undoing, the moral arc of the universe cannot be trusted to bend toward justice. On the contrary, McMahon argues, equality is not an inevitability but a hard-earned improbability.

it is not equality but its opposite that is always encroaching, dogging every attempt at progress, stalking its rival like a shadow, patiently waiting to strike.

In his ambitious new book, “Equality: The History of an Elusive Idea,” Dartmouth history professor Darrin M. McMahon proposes that the “elusive idea” in question is expansive enough to vindicate both accounts. His wide-ranging survey of equality throughout the ages demonstrates that progress toward achieving it is almost never linear.

there is no debate. There’s a trade-off. But once you make identity a core qualification, you’re opening up a whole world of racist anti-racism.

Most Americans believe in individual merit, and advancement regardless of identity. Harvard and our new elite believe that our society is so structured as an enduring “white supremacy” that merit can only be considered after you have accounted for the effects of “intersectional oppression.”

each moment of truth puts a crack in the stifling, authoritarian edifice of DEI. We can bring this corruption to light. We can hold them to account. I’m certainly more hopeful about the future of liberal society now than I was a month ago.

the only way to cover it all up, of course, is to abolish testing students entirely (which is what so many elite colleges and universities are now doing) or to give all students an A or an A-, making any distinctions of excellence irrelevant.

When push comes to shove, when there is a finite number of places available, you’re in a zero-sum predicament. You have to pick between a smarter student of the wrong race and a weaker student of the right race. In the end at Harvard, being in the right race — not merit — determines your chances.

The more people see this for the systemic racism it is, the sooner we can throw this neo-Marxist cuckoo out of the liberal nest, and return to the airing of all ideas, regardless of the subject matter or the identity of the students

That’s how you can claim, as Gay does, that “diversity” and “excellence” go hand in hand, when obviously, at some point they can and do conflict.

The response to all this from the CRT crowd has been to insist — ever more strongly — that Gay is simply and only a victim of racism, or, in woke terminology, a victim of misogynoir. The fact that a white female university president at those same hearings lost her job before Gay did — and without any plagiarism questions — doesn’t count.

In the Congressional hearings, moreover, she showed little gravitas, grace, or ability to think on her feet. She has largely hidden from public view since the plagiarism revelations — not a good instinct for a leader of a huge, public-facing institution like Harvard. She is, quite obviously, a run-of-the-mill woke academic, who was promoted at breakneck speed because of her race and sex, and found herself quickly out of her depth.

When you look instead at what she has done as an administrator, which is where she has been focused more recently, you see it has almost all been about hiring on the basis of sex and race, persecuting heretical members of racial minorities, and removing paintings of dead white dudes. She is, at least, consistent.

And let’s be honest: we can all see with our own eyes that subordinating merit to race and sex is how Gay got her position. Her work, beyond the sloppy dime-store plagiarism, would be underwhelming for an average member of any faculty in the country. But for a Harvard president, it’s astonishingly mid

The fundamental geographic division in American politics has traditionally been a sectional conflict setting the North against the South. The idioms of "red states" and "blue states" caught on widely after the 2000 presidential election because they could be applied to a regional divide—blue North, red South—that was already presumed to reflect the main axis of political debate and competition. But the partisan difference between large-metro and rural residents has now become much larger than the gap between northerners and southerners.

I call this widening gap between the partisan loyalties of urban and rural America “the density divide.” Hopkins is clearly correct that urban vs. rural has eclipsed North vs. South as the geographic embodiment of our partisan divisions. As the old adage goes, a chart speaks a thousand white papers.

Many large metropolitan areas grew faster over the past decade than the Bureau had previously projected, with eight of the nation's ten largest cities showing an increased growth rate compared to the 2000 to 2010 period. At the same time, most of rural America shrank in absolute as well as relative terms. A majority—52 percent—of the nation's counties actually reported a smaller raw population in 2020 than they had in 2010.

One of the puzzles of the 2016 election, and the catastrophe of the Trump presidency, is how populist white nationalism finally prevailed at a time when Americans, taken altogether, were less racist than ever

My hunch is that rural white culture, which was once regionally varied and distinctive, became more uniform by becoming increasingly Southern. I call this the Southernification thesis.

In the Density Divide, I argued that the key to answering “Why did white ethnonationalism finally work to win the GOP nomination and then the White House when it didn’t even get close to working for Pat Buchanan or Ron Paul?” was that residential self-selection on ethnicity, personality, and education had made lower density parts of the country progressively more homogenously ethnocentric and socially conservative, which finally made it possible to unify and organize rural and exurban whites as a single constituency.

I think it’s an incomplete explanation without something like the Southernification thesis. Before it could be successfully organized politically, America’s increasingly ethnocentric non-urban white population needed to be consolidated first through the adoption of a relatively uniform ethnocentric white culture.

When I was a kid, the Atlanta Bravesþff somehow became “America’s Team.” Could it be that the media mogul who married Hanoi Jane took the critical first step in bringing non-urban white America together by beaming sanitized Southern culture into living rooms everywhere?

The 2024 election will not be the usual battle between parties, platforms and policies. It is a battle between those who fundamentally respect and abide by the ground rules of democracy and those who do not.

To underline his case most forcefully, Mr. Biden didn’t need to use his own words. He could rely on the words of his opponent: revenge, retribution, fight like hell, terminate the Constitution, suckers and losers, vermin, poisoning the blood of our country, dictator on Day 1, American carnage. There is no subtext here; it’s all text. As Mr. Biden put it, “We all know who Donald Trump is.”

And yet, apparently, we need to keep reminding ourselves. Otherwise, we fall into the trap of normalization that Mr. Trump laid from the start.

Today he can call for the execution of the chairman of the Joint Chiefs of Staff, or tell the Biden administration to “rot in hell,” or promote a video claiming he is literally a gift from God, and it gets less attention in both mainstream and social media than Mr. Biden tripping over a sandbag.

How did we end up here? Mr. Biden offered one compelling explanation: complacency. “We’ve been blessed so long with a strong, stable democracy, it’s easy to forget why so many before us risked their lives and strengthened democracy,

In that sense, democracy is like vaccines. Few people today have firsthand memories of the horrors of diseases that were rampant before vaccines largely eradicated them, which makes it easier for vaccine hesitancy to take root

Similarly, when a country has no history of living under a dictatorship, it can be easier to lose sight of what it means to live in a representative democracy, and to be caught flat-footed when a real authoritarian comes knocking.

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.

Biden’s Department of Education has interpreted Title VI to apply when students “experience discrimination, including harassment,” on the basis of their “shared ancestry or ethnic characteristics.”

these statements — even if fairly rooted in the text of Title VI — are not a solution

Executive orders and administrative regulations are more ephemeral than federal statutes. The next president (or one elected in 2036 or 2052) may choose to interpret Title VI differently. Biden’s interpretation is broader than Trump’s, for example. Courts will also have their own say, and they are now less deferential to presidential interpretations of the law than they’ve been in decades.

The definitions don’t just implicate the First Amendment, they also breed confusion around the very concept of harassment itself. Hearing unpleasant or even hateful thoughts or ideas isn’t “harassment.”

The best parts of the Antisemitism Awareness Act explicitly incorporate discrimination based on “actual or perceived shared ancestry or ethnic characteristics” into federal statutory law, elevating the legal protections well beyond the executive orders and guidance letters of previous administrations.

If the law had stopped there — or even if it had gone further and explicitly stated that discrimination on the basis of actual or perceived Jewish identity is by definition discrimination on the basis of shared ancestry, then it would be a vital addition to federal law.

But the law did not stop there. It goes on to require schools to consider the International Holocaust Remembrance Alliance’s working definition of antisemitism when determining whether there has been a violation of Title VI

This is a serious mistake. The alliance’s definition includes examples of antisemitism that encompass a broad range of statements that are protected by the First Amendment.

Both the Trump and the Biden administrations attempted to solve the problem by interpreting Title VI to apply to antisemitism, at least in some circumstances. The Trump administration issued an executive order stating that “discrimination against Jews may give rise to a Title VI violation when the discrimination is based on an individual’s race, color or national origin.”

That’s an inescapable part of life in a free, pluralistic nation

Harassment is something else entirely.

In a 1999 case, Davis v. Monroe County Board of Education, the Supreme Court defined student-on-student harassment under Title IX (the federal statute prohibiting sex discrimination in federally funded education) as conduct “so severe, pervasive and objectively offensive, and that so undermines and detracts from the victims’ educational experience, that the victims are effectively denied equal access to an institution’s resources and opportunities.”

Harassment doesn’t depend so much on the content or viewpoint of the objectionable speech as where, when and how it happens.

If students chant, “Globalize the intifada,” at a lawful public protest, then that’s protected

If they shout down Jewish students in class using the same phrase, or chant it outside the dorm rooms of Jewish students at 3 a.m., then they’re engaging in harassment. Jewish students can’t study or sleep on an equal basis with other students.

In both of those circumstances, the actual content of the words is less important than the timing and the targets. A person can commit an act of antisemitic harassment if he targets Jewish students with words that have nothing to do with ancestry or ethnicity

For example, if someone stands outside a Jewish student’s room night after night yelling, “Michael Jordan is the GOAT” relentlessly so that the student can’t sleep or targets her Jewish roommate with constant interruption and distraction then she’s engaging in antisemitic harassment not because of the content or viewpoint of the words, but rather because of the identity of the target and the time and manner of the speech.

I’d like to humbly offer a better way. Strip the problematic incorporation of the alliance’s antisemitism definition and examples from the bill entirely. Instead, simply amend Title VI itself to make it explicit that discrimination based on “actual or perceived shared ancestry or ethnic characteristics” is prohibited by the statute and that antisemitic discrimination meets that definition.

by revising Title VI to clearly prohibit discrimination against Jews without any further amplification or definition, antisemitic harassment will fit neatly into existing case law that has longed harmonized free speech principles and nondiscrimination law

It’s why the “bad war” of Vietnam was only escaped at the cost of betraying the South Vietnamese and making a deal with yet another monster in Beijing.

The alternative is a form of argument in which essential aspects of the world, being inconvenient to moral absolutism, simply disappear.

A “realist” foreign policy can slide from describing power to excusing depredations.

But seeing statecraft as a tragic balancing of evils is still essential, especially amid the kind of moral fervor that attends a conflict like Israel’s war in Gaza.

But in active controversies the tragic vision can seem like a cold way of looking at the world. Lean into it too hard, and you get accused of ignoring injustice or recapitulating the indifference that gave cover to past atrocities.

The difficulty is that liberal “freedom” is on offer almost nowhere in the Middle East, certainly not in Gaza under Hamas’s rule, and the most challenging “otherness of beliefs” in this situation are the beliefs that motivated the massacres of Oct. 7.

a hype around Israeli moral failures — it's not enough for a war that yields so many casualties to be unjust, if it’s wrong it must be genocide — that ends up suppressing the harsh implications of a simple call for peace.

A representative passage, from Pankaj Mishra in The London Review of Books, describes many protesters as “motivated by the simple wish to uphold the ideals that seemed so universally desirable after 1945: respect for freedom, tolerance for the otherness of beliefs and ways of life; solidarity with human suffering; and a sense of moral responsibility for the weak and persecuted.”

No doubt many campus protesters have these motivations.

The alternative articulated by, for instance, Mitt Romney — “We stand by allies, we don’t second-guess them” — is not a serious policy for a hegemon balancing its global obligations

For example, reading the apologia for pro-Palestinian protests from certain left-wing intellectuals, you have a sense of both elision and exaggeration

seem untroubled by this fact, and perfectly comfortable with supporting not just peaceful negotiation but a revolutionary struggle led by Islamist fanatics.

Which yields the moral dilemma the protests don’t acknowledge: Ending the war on the terms they want could grant a major strategic victory to the regional alliance dedicated to the murder of Israelis and their expulsion from the Middle East.

Maybe the Gaza war is unjust enough, and Israeli goals unachievable enough, that there’s no alternative to vindicating Hamas’s blood-soaked strategy

you have to be honest about what you’re endorsing: a brutal weighing-out of evils, not any sort of triumph for “universally desirable” ideals.

Then a similar point applies to supporters of the Israeli war, for whom moral considerations — the evil of Hamas, the historical suffering of the Jewish people, the special American relationship with Israel — are invoked as an argument-ender in an inflexible way

We are constantly urged to “stand with Israel” when it’s unclear if Israel knows what it’s doing.

Joe Biden’s administration is chastised for betrayal when it tries to influence Israel’s warmaking, even though the Israeli government’s decisions before and since Oct. 7 do not inspire great confidence.

Biden’s specific attempts to micromanage the conflict may be misguided or hamfisted

But it’s not misguided for America, an imperium dealing with multiplying threats, to decline to write a blank check for a war being waged without a clear plan for victory or for peace.

Another difficulty is that some instigators of the protests

In each case, you have a desire that mirrors the impulse of the left-wing intellectuals — to make foreign policy easy by condensing everything to a single moral judgment. But the problems of the world cannot be so easily reduced.

Being cold-eyed and tragic-minded does not mean abandoning morality. But it means recognizing that often nobody is simply right, no single approach is morally obvious, and no strategy is clean.

Dr. Longo, who is also a professor of gerontology and director of the U.S.C. Longevity Institute in California, has long advocated longer and better living through eating Lite Italian, one of a global explosion of Road to Perpetual Wellville theories about how to stay young in a field that is itself still in its adolescence.

In addition to identifying genes that regulate aging, he has created a plant and nut-based diet with supplements and kale crackers that mimics fasting to, he argues, allow cells to shed harmful baggage and rejuvenate, without the down side of actually starving.

He has patented and sold his ProLon diet kits; published best-selling books (“The Longevity Diet”); and been called an influential “Fasting Evangelist” by Time magazine.

Last month, he published a new study based on clinical trials of hundreds of older people — including in the Calabria town from which his family hails — that he said suggests that periodic cycles of his own faux-fasting approach could reduce biological age and stave off illnesses associated with aging.

“It’s very similar to the original Mediterranean diet, not the present one,” she said, pointing at photographs on the wall of a bowl of ancient legumes similar to the chickpe

“Almost nobody in Italy eats the Mediterranean diet,”

He added that many Italian children, especially in the country’s south, are obese, bloated on what he calls the poisonous five Ps — pizza, pasta, protein, potatoes and pane (or bread).

in recent years, Silicon Valley billionaires who hope to be forever young have funded secretive labs. Wellness articles have conquered newspaper home pages and Fountains-of-Youth workout and diet ads featuring insanely fit middle-aged people teem on the social media feeds of not insanely fit middle-aged people.

he said Italy’s lack of investment in research was a disgrace.

even as concepts like longevity, intermittent fasting and biological age — you’re only as old as your cells feel! — have gained momentum, governments like Italy’s are fretting over a creakier future in which booming populations of old people drain resources from the dwindling young.

many scientists, nutritionists and longevity fanatics the world over continue to stare longingly toward Italy, seeking in its deep pockets of centenarians a secret ingredient to long life.

“Probably they kept breeding between cousins and relatives,” Dr. Longo offered, referring to the sometimes close relations in little Italian hill towns. “At some point, we suspect it sort of generated the super-longevity genome.”

The genetic drawbacks of incest, he hypothesized, slowly vanished because those mutations either killed their carriers before they could reproduce or because the town noticed a monstrous ailment — like early onset Alzheimer’s — in a particular family line and steered clear.

Dr. Longo wonders whether Italy’s centenarians had been protected from later disease by a starvation period and old-fashioned Mediterranean diet early in life, during rural Italy’s abject war-era poverty. Then a boost of proteins and fats and modern medicine after Italy’s postwar economic miracle protected them from frailty as they got older and kept them alive.

At age 16, he moved to Chicago to live with relatives and couldn’t help notice that his middle-aged aunts and uncles fed on the “Chicago diet” of sausages and sugary drinks suffered diabetes and cardiovascular disease that their relatives back in Calabria did not.

He eventually earned his Ph.D in biochemistry at U.C.L.A. and did his postdoctoral training in the neurobiology of aging at U.S.C. He overcame early skepticism about the field to publish in top journals and became a zealous evangelizer for the age-reversing effects of his diet. About 10 years ago, eager to be closer to his aging parents in Genoa, he took a second job at the IFOM oncology institute in Milan.

He found a fount of inspiration in the pescatarian-heavy diet around Genoa and all the legumes down in Calabria.

he also found the modern Italian diet — the cured meats, layers of lasagna and fried vegetables the world hungered for — horrendous and a source of disease.

His private foundation, also based in Milan, tailors diets for cancer patients, but also consults for Italian companies and schools, promoting a Mediterranean diet that is actually foreign to most Italians today.

“Italy’s got such incredible history and a wealth of information about aging,” he said. “But spends virtually nothing.”

He talked about how he and others had identified an important regulator of aging in yeast, and how he has investigated whether the same pathway was at work in all organisms.

Dr. Longo said he thinks of his mission as extending youth and health, not simply putting more years on the clock, a goal he said could lead to a “scary world,” in which only the rich could afford to live for centuries, potentially forcing caps on having children

A more likely short-term scenario, he said, was division between two populations. The first would live as we do now and reach about 80 or longer through medical advancements. But Italians would be saddled with long — and, given the drop in the birthrate, potentially lonely — years burdened by horrible diseases.

The other population would follow fasting diets and scientific breakthroughs and live to 100 and perhaps 110 in relative good health.