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The true work of the mathematician is not experienced until the later parts of graduate school, when the student is challenged to create knowledge in the form of a novel proof. It is common to fill page after page with an attempt, the seasons turning, only to arrive precisely where you began, empty-handed — or to realize that a subtle flaw of logic doomed the whole enterprise from its outset. The steady state of mathematical research is to be completely stuck. It is a process that Charles Fefferman of Princeton, himself a onetime math prodigy turned Fields medalist, likens to ‘‘playing chess with the devil.’’ The rules of the devil’s game are special, though: The devil is vastly superior at chess, but, Fefferman explained, you may take back as many moves as you like, and the devil may not. You play a first game, and, of course, ‘‘he crushes you.’’ So you take back moves and try something different, and he crushes you again, ‘‘in much the same way.’’ If you are sufficiently wily, you will eventually discover a move that forces the devil to shift strategy; you still lose, but — aha! — you have your first clue.

Tao has emerged as one of the field’s great bridge-­builders. At the time of his Fields Medal, he had already made discoveries with more than 30 different collaborators. Since then, he has also become a prolific math blogger with a decidedly non-­Gaussian ebullience: He celebrates the work of others, shares favorite tricks, documents his progress and delights at any corrections that follow in the comments. He has organized cooperative online efforts to work on problems. ‘‘Terry is what a great 21st-­century mathematician looks like,’’ Jordan Ellenberg, a mathematician at the University of Wisconsin, Madison, who has collaborated with Tao, told me. He is ‘‘part of a network, always communicating, always connecting what he is doing with what other people are doing.’’

Most mathematicians tend to specialize, but Tao ranges widely, learning from others and then working with them to make discoveries. Markus Keel, a longtime collaborator and close friend, reaches to science fiction to explain Tao’s ability to rapidly digest and employ mathematical ideas: Seeing Tao in action, Keel told me, reminds him of the scene in ‘‘The Matrix’’ when Neo has martial arts downloaded into his brain and then, opening his eyes, declares, ‘‘I know kung fu.’’ The citation for Tao’s Fields Medal, awarded in 2006, is a litany of boundary hopping and notes particularly ‘‘beautiful work’’ on Horn’s conjecture, which Tao completed with a friend he had played foosball with in graduate school. It was a new area of mathematics for Tao, at a great remove from his known stamping grounds. ‘‘This is akin,’’ the citation read, ‘‘to a leading English-­language novelist suddenly producing the definitive Russian novel.’’

For their work, Tao and Green salvaged a crucial bit from an earlier proof done by others, which had been discarded as incorrect, and aimed at a different goal. Other maneuvers came from masterful proofs by Timothy Gowers of England and Endre Szemeredi of Hungary. Their work, in turn, relied on contributions from Erdos, Klaus Roth and Frank Ramsey, an Englishman who died at age 26 in 1930, and on and on, into history. Ask mathematicians about their experience of the craft, and most will talk about an intense feeling of intellectual camaraderie. ‘‘A very central part of any mathematician’s life is this sense of connection to other minds, alive today and going back to Pythagoras,’’ said Steven Strogatz, a professor of mathematics at Cornell University. ‘‘We are having this conversation with each other going over the millennia.’’

As a group, the people drawn to mathematics tend to value certainty and logic and a neatness of outcome, so this game becomes a special kind of torture. And yet this is what any ­would-be mathematician must summon the courage to face down: weeks, months, years on a problem that may or may not even be possible to unlock. You find yourself sitting in a room without doors or windows, and you can shout and carry on all you want, but no one is listening.

An effort to prove that 1 equals 0 is not likely to yield much fruit, it’s true, but the hacker’s mind-set can be extremely useful when doing math. Long ago, mathematicians invented a number that when multiplied by itself equals negative 1, an idea that seemed to break the basic rules of multiplication. It was so far outside what mathematicians were doing at the time that they called it ‘‘imaginary.’’ Yet imaginary numbers proved a powerful invention, and modern physics and engineering could not function without them.

Early encounters with math can be misleading. The subject seems to be about learning rules — how and when to apply ancient tricks to arrive at an answer. Four cookies remain in the cookie jar; the ball moves at 12.5 feet per second. Really, though, to be a mathematician is to experiment. Mathematical research is a fundamentally creative act. Lore has it that when David Hilbert, arguably the most influential mathematician of fin de siècle Europe, heard that a colleague had left to pursue fiction, he quipped: ‘‘He did not have enough imagination for mathematics.’’

Many people think that substantial progress on Navier-­Stokes may be impossible, and years ago, Tao told me, he wrote a blog post concurring with this view. Now he has some small bit of hope. The twin-prime conjecture had the same feel, a sense of breaking through the wall of intimidation that has scared off many aspirants. Outside the world of mathematics, both Navier-­Stokes and the twin-prime conjecture are described as problems. But for Tao and others in the field, they are more like opponents. Tao’s opponent has been known to taunt him, convincing him that he is overlooking the obvious, or to fight back, making quick escapes when none should be possible. Now the opponent appears to have revealed a weakness. But Tao said he has been here before, thinking he has found a way through the defenses, when in fact he was being led into an ambush. ‘‘You learn to get suspicious,’’ Tao said. ‘‘You learn to be on the lookout.’’

Your ancestors came in chains. In your book the dream of the comfortable suburban life is a “fairy tale.” For you, slavery is the original American sin, from which there is no redemption. America is Egypt without the possibility of the Exodus. African-American men are caught in a crushing logic, determined by the past, from which there is no escape.

The innocent world of the dream is actually built on the broken bodies of those kept down below.

I think you distort American history. This country, like each person in it, is a mixture of glory and shame. There’s a Lincoln for every Jefferson Davis and a Harlem Children’s Zone for every K.K.K. — and usually vastly more than one. Violence is embedded in America, but it is not close to the totality of America.

In your anger at the tone of innocence some people adopt to describe the American dream, you reject the dream itself as flimflam. But a dream sullied is not a lie. The American dream of equal opportunity, social mobility and ever more perfect democracy cherishes the future more than the past. It abandons old wrongs and transcends old sins for the sake of a better tomorrow.

This dream is a secular faith that has unified people across every known divide. It has unleashed ennobling energies and mobilized heroic social reform movements. By dissolving the dream under the acid of an excessive realism, you trap generations in the past and destroy the guiding star that points to a better future.

Ben.Lynch Augusta, Georgia 1 day ago I've followed Mr. Coates for sometime now and tend to agree with his viewpoints. As a white southern male who works in our segregated education systems, it took years for me to actually apprehend my day to day interactions with black children in poverty. For the longest time, I simply couldn't understand the behaviors I saw, the reactions, and at first I reacted with contempt, but then I began to understand little by little. I don't think I can express it to anyone here, let alone Mr. Brooks, but it is something that one only appears to get by letting it sink into your bones day after day, hour after hour. The conditions are terrible and promise to remain so for the rest of my career. My students know, even if they lack the rhetorical chops to express it, that the game is rigged, that what we sell, meaning America at large, to make ourselves feel better, to feel just, is demonstrably a false bill of goods that does nothing to solve the actual problems of their life. These students are so used to being crushed that they can't even begin to articulate that they are being crushed because it's simply how it is. Some suppose Mr. Coates is overly dour, overly negative, but he provides a necessary contrapuntal to those who assume that the arc of the universe inevitably bends toward justice. Struggle can and often does end in defeat. The wicked often sleep as well as the just and sometimes better. The sins of the fathers remain fixed around the necks of the sons and daughters.

Even W. E. B. Du Bois had trouble formulating a theoretically accurate account of racial identity, so he put it simply: A black man is “a person who must ride ‘Jim Crow’ in Georgia.” But his statement still leaves us with a puzzle: What would a black man be without Jim Crow to define him?

The historical evidence is overwhelming, then, that the color line has always been far more porous and fragile than one might assume. In some places, it was so brittle that it could buckle and break.

To say that race is socially constructed gives it an air of make-believe. Race is quite real to those who live with it. Ask the families of the black men and women who have lost their lives during tragic encounters with the police. The choices about “who” they were, were not their own.

There is no essentialized, fixed, “true identity” waiting just below the surface. Identities are contingent, elusive and, as the cultural theorist Stuart Hall argued, “always in process.

at the very least, perhaps we can use Ms. Dolezal’s story, puzzling as it is, as an opportunity to have a candid, lively, long-delayed, public conversation about the knotty meanings of race and racial identity, and how it has confounded our nation’s best aspirations. Perhaps we may yet move beyond the imprisoning boxes we have made.

“People in the Nuba Mountains will never forget his name,” said Lt. Col. Aburass Albino Kuku of the rebel military force. “People are praying that he never dies.”

A Muslim paramount chief named Hussein Nalukuri Cuppi offered an even more unusual tribute.“He’s Jesus Christ,” he said. Continue reading the main story Write A Comment Er, pardon?The chief explained that Jesus healed the sick, made the blind see and helped the lame walk — and that is what Dr. Tom does every day.You needn’t be a conservative Catholic or evangelical Christian to celebrate that kind of selflessness. Just human.

For me it’s this literature, more than the phenomenon itself, which makes genius a topic worth paying attention to. And the more you read, the less likely you are to be able to come up with any definition of what genius might be.

For eighteenth-century commentators, genius was self-evident: you knew it when you saw it, but for the nineteenth-century Romantics, genius was essentially misunderstood, and only genius itself was capable of recognizing its own kind

After the French Revolution, the question of national genius (another sense of the word, deriving from the genius loci) was subject to particularly anxious or over-assertive scrutiny. A number of nineteenth-century novels allowed for a rare feminine role in genius, but almost always doomed genius to failure. The medical profession turned the genius into a madman, while the experimental psychologists at the end of the century devised the IQ test which made genius nothing more than a high point on a continuous scale of intelligence. Child prodigies were the stuff of children’s literature but real examples in the twentieth century generated skepticism about the whole notion of genius, until Julia Kristeva came along and rehabilitated genius as essentially feminine, and Jacques Derrida embraced imposture as its essential quality

What all this indicates is that the idea of genius is curiously labile, that it changes shape, definition and value according to the way it’s talked about, but also that there’s something about the idea that, as Claude Lévi-Strauss said about animals, makes it ‘good to think with.’        

Science is not a body of facts that emerge, like an orderly string of light bulbs, to illuminate a linear path to universal truth. Rather, science (to paraphrase Henry Gee, an editor at Nature) is a method to quantify doubt about a hypothesis, and to find the contexts in which a phenomenon is likely. Failure to replicate is not a bug; it is a feature. It is what leads us along the path — the wonderfully twisty path — of scientific discovery.

he and the other authors acknowledged the challenge in gaining traction, even with such findings, given the deep-rooted human bias toward immediate gratification and the development and energy gaps that mean today’s poorer nations have few affordable choices other than fossil fuels. See my recent look at India’s argument for expanded coal use.)

It’s real important to think about these long time scales. Essentially, what our study shows is that the changes that we bring upon within the next decades can really change the face of the Earth for thousands of years to come.

Another aspect to it that really pushes it into our century, or even our decade, is that we are emitting the carbon now and it stays in the atmosphere for a long time and the temperature remains high even longer than the carbon remains high.

It is not that the English language has ceased to be a precious possession; on the contrary, it is far more important now than it ever was in my childhood. But its importance has little or nothing to do any longer with the dream of rootedness. English is the premier international language, the global medium of communication and exchange.

as I have discovered in my teaching, it is a different Shakespeare from the one with whom I first fell in love. Many of my students may have less verbal acuity than in years past, but they often possess highly developed visual, musical and performative skills. They intuitively grasp, in a way I came to understand only slowly, the pervasiveness of songs in Shakespeare’s plays, the strange ways that his scenes flow one into another or the cunning alternation of close-ups and long views

When I ask them to write a 10-page paper analyzing a particular web of metaphors, exploring a complex theme or amassing evidence to support an argument, the results are often wooden; when I ask them to analyze a film clip, perform a scene or make a video, I stand a better chance of receiving something extraordinary.

This does not mean that I should abandon the paper assignment; it is an important form of training for a range of very different challenges that lie in their future. But I see that their deep imaginative engagement with Shakespeare, their intoxication, lies elsewhere.

The M.I.T. Global Shakespeare Project features an electronic archive that includes images of every page of the First Folio of 1623. In the Norton Shakespeare, which I edit, the texts of his plays are now available not only in the massive printed book with which I was initiated but also on a digital platform. One click and you can hear each song as it might have sounded on the Elizabethan stage; another click and you listen to key scenes read by a troupe of professional actors. It is a kind of magic unimagined even a few years ago or rather imaginable only as the book of a wizard like Prospero in ‘‘The Tempest.’

But it is not the new technology alone that attracts students to Shakespeare; it is still more his presence throughout the world as the common currency of humanity. In Taiwan, Tokyo and Nanjing, in a verdant corner of the Villa Borghese gardens in Rome and in an ancient garden in Kabul, in Berlin and Bangkok and Bangalore, his plays continue to find new and unexpected ways to enchant.

Since at least the Middle Ages, philosophers and philologists have dreamed of curing natural languages of their flaws by constructing entirely new idioms according to orderly, logical principles.

What if, they wondered, you could create a universal written language that could be understood by anyone, a set of “real characters,” just as the creation of Arabic numerals had done for counting? “This writing will be a kind of general algebra and calculus of reason, so that, instead of disputing, we can say that ‘we calculate,’ ” Leibniz wrote, in 1679.

nventing new forms of speech is an almost cosmic urge that stems from what the linguist Marina Yaguello, the author of “Lunatic Lovers of Language,” calls “an ambivalent love-hate relationship.” Language creation is pursued by people who are so in love with what language can do that they hate what it doesn’t. “I don’t believe any other fantasy has ever been pursued with so much ardor by the human spirit, apart perhaps from the philosopher’s stone or the proof of the existence of God; or that any other utopia has caused so much ink to flow, apart perhaps from socialism,”

Quijada began wondering, “What if there were one single language that combined the coolest features from all the world’s languages?”

Solresol, the creation of a French musician named Jean-François Sudre, was among the first of these universal languages to gain popular attention. It had only seven syllables: Do, Re, Mi, Fa, So, La, and Si. Words could be sung, or performed on a violin. Or, since the language could also be translated into the seven colors of the rainbow, sentences could be woven into a textile as a stream of colors.

“I had this realization that every individual language does at least one thing better than every other language,” he said. For example, the Australian Aboriginal language Guugu Yimithirr doesn’t use egocentric coördinates like “left,” “right,” “in front of,” or “behind.” Instead, speakers use only the cardinal directions. They don’t have left and right legs but north and south legs, which become east and west legs upon turning ninety degrees

Among the Wakashan Indians of the Pacific Northwest, a grammatically correct sentence can’t be formed without providing what linguists refer to as “evidentiality,” inflecting the verb to indicate whether you are speaking from direct experience, inference, conjecture, or hearsay.

In his “Essay Towards a Real Character, and a Philosophical Language,” from 1668, Wilkins laid out a sprawling taxonomic tree that was intended to represent a rational classification of every concept, thing, and action in the universe. Each branch along the tree corresponded to a letter or a syllable, so that assembling a word was simply a matter of tracing a set of forking limbs

he started scribbling notes on an entirely new grammar that would eventually incorporate not only Wakashan evidentiality and Guugu Yimithirr coördinates but also Niger-Kordofanian aspectual systems, the nominal cases of Basque, the fourth-person referent found in several nearly extinct Native American languages, and a dozen other wild ways of forming sentences.

he discovered “Metaphors We Live By,” a seminal book, published in 1980, by the cognitive linguists George Lakoff and Mark Johnson, which argues that the way we think is structured by conceptual systems that are largely metaphorical in nature. Life is a journey. Time is money. Argument is war. For better or worse, these figures of speech are profoundly embedded in how we think.

I asked him if he could come up with an entirely new concept on the spot, one for which there was no word in any existing language. He thought about it for a moment. “Well, no language, as far as I know, has a single word for that chin-stroking moment you get, often accompanied by a frown on your face, when someone expresses an idea that you’ve never thought of and you have a moment of suddenly seeing possibilities you never saw before.” He paused, as if leafing through a mental dictionary. “In Ithkuil, it’s ašţal.”

Neither Sapir nor Whorf formulated a definitive version of the hypothesis that bears their names, but in general the theory argues that the language we speak actually shapes our experience of reality. Speakers of different languages think differently. Stronger versions of the hypothesis go even further than this, to suggest that language constrains the set of possible thoughts that we can have. In 1955, a sociologist and science-fiction writer named James Cooke Brown decided he would test the Sapir-Whorf hypothesis by creating a “culturally neutral” “model language” that might recondition its speakers’ brains.

most conlangers come to their craft by way of fantasy and science fiction. J. R. R. Tolkien, who called conlanging his “secret vice,” maintained that he created the “Lord of the Rings” trilogy for the primary purpose of giving his invented languages, Quenya, Sindarin, and Khuzdul, a universe in which they could be spoken. And arguably the most commercially successful invented language of all time is Klingon, which has its own translation of “Hamlet” and a dictionary that has sold more than three hundred thousand copies.

He imagined that Ithkuil might be able to do what Lakoff and Johnson said natural languages could not: force its speakers to precisely identify what they mean to say. No hemming, no hawing, no hiding true meaning behind jargon and metaphor. By requiring speakers to carefully consider the meaning of their words, he hoped that his analytical language would force many of the subterranean quirks of human cognition to the surface, and free people from the bugs that infect their thinking.

Brown based the grammar for his ten-thousand-word language, called Loglan, on the rules of formal predicate logic used by analytical philosophers. He hoped that, by training research subjects to speak Loglan, he might turn them into more logical thinkers. If we could change how we think by changing how we speak, then the radical possibility existed of creating a new human condition.

today the stronger versions of the Sapir-Whorf hypothesis have “sunk into . . . disrepute among respectable linguists,” as Guy Deutscher writes, in “Through the Looking Glass: Why the World Looks Different in Other Languages.” But, as Deutscher points out, there is evidence to support the less radical assertion that the particular language we speak influences how we perceive the world. For example, speakers of gendered languages, like Spanish, in which all nouns are either masculine or feminine, actually seem to think about objects differently depending on whether the language treats them as masculine or feminine

The final version of Ithkuil, which Quijada published in 2011, has twenty-two grammatical categories for verbs, compared with the six—tense, aspect, person, number, mood, and voice—that exist in English. Eighteen hundred distinct suffixes further refine a speaker’s intent. Through a process of laborious conjugation that would befuddle even the most competent Latin grammarian, Ithkuil requires a speaker to home in on the exact idea he means to express, and attempts to remove any possibility for vagueness.

Every language has its own phonemic inventory, or library of sounds, from which a speaker can string together words. Consonant-poor Hawaiian has just thirteen phonemes. English has around forty-two, depending on dialect. In order to pack as much meaning as possible into each word, Ithkuil has fifty-eight phonemes. The original version of the language included a repertoire of grunts, wheezes, and hacks that are borrowed from some of the world’s most obscure tongues. One particular hard-to-make clicklike sound, a voiceless uvular ejective affricate, has been found in only a few other languages, including the Caucasian language Ubykh, whose last native speaker died in 1992.

Human interactions are governed by a set of implicit codes that can sometimes seem frustratingly opaque, and whose misreading can quickly put you on the outside looking in. Irony, metaphor, ambiguity: these are the ingenious instruments that allow us to mean more than we say. But in Ithkuil ambiguity is quashed in the interest of making all that is implicit explicit. An ironic statement is tagged with the verbal affix ’kçç. Hyperbolic statements are inflected by the letter ’m.

“I wanted to use Ithkuil to show how you would discuss philosophy and emotional states transparently,” Quijada said. To attempt to translate a thought into Ithkuil requires investigating a spectrum of subtle variations in meaning that are not recorded in any natural language. You cannot express a thought without first considering all the neighboring thoughts that it is not. Though words in Ithkuil may sound like a hacking cough, they have an inherent and unavoidable depth. “It’s the ideal language for political and philosophical debate—any forum where people hide their intent or obfuscate behind language,” Quijada co

In Ithkuil, the difference between glimpsing, glancing, and gawking is the mere flick of a vowel. Each of these distinctions is expressed simply as a conjugation of the root word for vision. Hunched over the dining-room table, Quijada showed me how he would translate “gawk” into Ithkuil. First, though, since words in Ithkuil are assembled from individual atoms of meaning, he had to engage in some introspection about what exactly he meant to say.For fifteen minutes, he flipped backward and forward through his thick spiral-bound manuscript, scratching his head, pondering each of the word’s aspects, as he packed the verb with all of gawking’s many connotations. As he assembled the evolving word from its constituent meanings, he scribbled its pieces on a notepad. He added the “second degree of the affix for expectation of outcome” to suggest an element of surprise that is more than mere unpreparedness but less than outright shock, and the “third degree of the affix for contextual appropriateness” to suggest an element of impropriety that is less than scandalous but more than simply eyebrow-raising. As he rapped his pen against the notepad, he paged through his manuscript in search of the third pattern of the first stem of the root for “shock” to suggest a “non-volitional physiological response,” and then, after several moments of contemplation, he decided that gawking required the use of the “resultative format” to suggest “an event which occurs in conjunction with the conflated sense but is also caused by it.” He eventually emerged with a tiny word that hardly rolled off the tongue: apq’uxasiu. He spoke the first clacking syllable aloud a couple of times before deciding that he had the pronunciation right, and then wrote it down in the script he had invented for printed Ithkuil:

“You can make up words by the millions to describe concepts that have never existed in any language before,” he said.

Many conlanging projects begin with a simple premise that violates the inherited conventions of linguistics in some new way. Aeo uses only vowels. Kēlen has no verbs. Toki Pona, a language inspired by Taoist ideals, was designed to test how simple a language could be. It has just a hundred and twenty-three words and fourteen basic sound units. Brithenig is an answer to the question of what English might have sounded like as a Romance language, if vulgar Latin had taken root on the British Isles. Láadan, a feminist language developed in the early nineteen-eighties, includes words like radíidin, defined as a “non-holiday, a time allegedly a holiday but actually so much a burden because of work and preparations that it is a dreaded occasion; especially when there are too many guests and none of them help.”

“We think that when a person learns Ithkuil his brain works faster,” Vishneva told him, in Russian. She spoke through a translator, as neither she nor Quijada was yet fluent in their shared language. “With Ithkuil, you always have to be reflecting on yourself. Using Ithkuil, we can see things that exist but don’t have names, in the same way that Mendeleyev’s periodic table showed gaps where we knew elements should be that had yet to be discovered.”

Lakoff, who is seventy-one, bearded, and, like Quijada, broadly built, seemed to have read a fair portion of the Ithkuil manuscript and familiarized himself with the language’s nuances.“There are a whole lot of questions I have about this,” he told Quijada, and then explained how he felt Quijada had misread his work on metaphor. “Metaphors don’t just show up in language,” he said. “The metaphor isn’t in the word, it’s in the idea,” and it can’t be wished away with grammar.“For me, as a linguist looking at this, I have to say, ‘O.K., this isn’t going to be used.’ It has an assumption of efficiency that really isn’t efficient, given how the brain works. It misses the metaphor stuff. But the parts that are successful are really nontrivial. This may be an impossible language,” he said. “But if you think of it as a conceptual-art project I think it’s fascinating.”

But the students also described a sense of loss.

A 15-year-old boy told me that someday he wanted to raise a family, not the way his parents are raising him (with phones out during meals and in the park and during his school sports events) but the way his parents think they are raising him — with no phones at meals and plentiful family conversation. One college junior tried to capture what is wrong about life in his generation. “Our texts are fine,” he said. “It’s what texting does to our conversations when we are together that’s the problem.”

One teacher observed that the students “sit in the dining hall and look at their phones. When they share things together, what they are sharing is what is on their phones.” Is this the new conversation? If so, it is not doing the work of the old conversation. The old conversation taught empathy. These students seem to understand each other less.

In 2010, a team at the University of Michigan led by the psychologist Sara Konrath put together the findings of 72 studies that were conducted over a 30-year period. They found a 40 percent decline in empathy among college students, with most of the decline taking place after 2000.

We’ve gotten used to being connected all the time, but we have found ways around conversation — at least from conversation that is open-ended and spontaneous, in which we play with ideas and allow ourselves to be fully present and vulnerable. But it is in this type of conversation — where we learn to make eye contact, to become aware of another person’s posture and tone, to comfort one another and respectfully challenge one another — that empathy and intimacy flourish. In these conversations, we learn who we are.

the trend line is clear. It’s not only that we turn away from talking face to face to chat online. It’s that we don’t allow these conversations to happen in the first place because we keep our phones in the landscape.

It’s a powerful insight. Studies of conversation both in the laboratory and in natural settings show that when two people are talking, the mere presence of a phone on a table between them or in the periphery of their vision changes both what they talk about and the degree of connection they feel. People keep the conversation on topics where they won’t mind being interrupted. They don’t feel as invested in each other. Even a silent phone disconnects us.

Yalda T. Uhls was the lead author on a 2014 study of children at a device-free outdoor camp. After five days without phones or tablets, these campers were able to read facial emotions and correctly identify the emotions of actors in videotaped scenes significantly better than a control group. What fostered these new empathic responses? They talked to one another. In conversation, things go best if you pay close attention and learn how to put yourself in someone else’s shoes. This is easier to do without your phone in hand. Conversation is the most human and humanizing thing that we do.

At a nightly cabin chat, a group of 14-year-old boys spoke about a recent three-day wilderness hike. Not that many years ago, the most exciting aspect of that hike might have been the idea of roughing it or the beauty of unspoiled nature. These days, what made the biggest impression was being phoneless. One boy called it “time where you have nothing to do but think quietly and talk to your friends.” The campers also spoke about their new taste for life away from the online feed. Their embrace of the virtue of disconnection suggests a crucial connection: The capacity for empathic conversation goes hand in hand with the capacity for solitude.

In solitude we find ourselves; we prepare ourselves to come to conversation with something to say that is authentic, ours. If we can’t gather ourselves, we can’t recognize other people for who they are. If we are not content to be alone, we turn others into the people we need them to be. If we don’t know how to be alone, we’ll only know how to be lonely.

we have put this virtuous circle in peril. We turn time alone into a problem that needs to be solved with technology.

People sometimes say to me that they can see how one might be disturbed when people turn to their phones when they are together. But surely there is no harm when people turn to their phones when they are by themselves? If anything, it’s our new form of being together.

But this way of dividing things up misses the essential connection between solitude and conversation. In solitude we learn to concentrate and imagine, to listen to ourselves. We need these skills to be fully present in conversation.

One start toward reclaiming conversation is to reclaim solitude. Some of the most crucial conversations you will ever have will be with yourself. Slow down sufficiently to make this possible. And make a practice of doing one thing at a time. Think of unitasking as the next big thing. In every domain of life, it will increase performance and decrease stress.

Multitasking comes with its own high, but when we chase after this feeling, we pursue an illusion. Conversation is a human way to practice unitasking.

Our phones are not accessories, but psychologically potent devices that change not just what we do but who we are. A second path toward conversation involves recognizing the degree to which we are vulnerable to all that connection offers. We have to commit ourselves to designing our products and our lives to take that vulnerability into account.

We can choose not to carry our phones all the time. We can park our phones in a room and go to them every hour or two while we work on other things or talk to other people. We can carve out spaces at home or work that are device-free, sacred spaces for the paired virtues of conversation and solitude.

Families can find these spaces in the day to day — no devices at dinner, in the kitchen and in the car.

Engineers are ready with more ideas: What if our phones were not designed to keep us attached, but to do a task and then release us? What if the communications industry began to measure the success of devices not by how much time consumers spend on them but by whether it is time well spent?

The young woman who is so clear about the seven minutes that it takes to see where a conversation is going admits that she often doesn’t have the patience to wait for anything near that kind of time before going to her phone. In this she is characteristic of what the psychologists Howard Gardner and Katie Davis called the “app generation,” which grew up with phones in hand and apps at the ready. It tends toward impatience, expecting the world to respond like an app, quickly and efficiently. The app way of thinking starts with the idea that actions in the world will work like algorithms: Certain actions will lead to predictable results.

This attitude can show up in friendship as a lack of empathy. Friendships become things to manage; you have a lot of them, and you come to them with tools

here is a first step: To reclaim conversation for yourself, your friendships and society, push back against viewing the world as one giant app. It works the other way, too: Conversation is the antidote to the algorithmic way of looking at life because it teaches you about fluidity, contingency and personality.

We have time to make corrections and remember who we are — creatures of history, of deep psychology, of complex relationships, of conversations, artless, risky and face to face.

In the study, the NOAA researchers argue that long-standing problems with the way temperatures are measured have masked years of sea surface warming. Once those problems are corrected for, “this hiatus or slowdown simply vanishes,” said lead study author Thomas Karl, director of NOAA's National Climatic Data Center in Asheville, N.C.

Although researchers have long known that sea surface temperatures measured by autonomous buoys run cooler than temperatures measured by ships, they have failed to account for this as they expanded their use of buoy readings over the last two decades, the study authors argued.

“The buckets, when you pull them up, tend to evaporate their water, and if they're canvas there's even more evaporation,” Karl said. “By the time people stick a thermistor in the bucket to measure temperature, it's already slightly cool.”

“If you start a short-time series on an anomalous value, you tend to get an anomalous trend,” Karl said.

A growing number of climate scientists have argued that this phenomenon, as well as other hiatus effects, are evidence of a poorly understood pattern of wind, ocean current and temperature variations that have far-reaching effects on global climate. They say the oceans have absorbed heat energy from the sun, causing Arctic ice to melt and sea levels to rise.

“One way to think about it is that global warming continued, but the oceans just juggled a bit of heat around and made the surface seem cooler for a while,” said Joshua Willis, another climate scientist at JPL.

“All of those factors are real,” Karl said. “If those factors had not occurred, the warming rate would have been even greater. … If anything we may still be underestimating the trend.” 

In a demonstration of the technology, the team analysed blood from 569 people in the US, South Africa, Thailand and Peru. The test found that, on average, people had been infected with 10 species of viruses, though at least two people in the trial had histories of 84 infections from different kinds of viruses.

The test could bring about major benefits for organ transplant patients. One problem that can follow transplant surgery is the unexpected reawakening of viruses that have lurked inactive in the patient or donor for years. These viruses can return in force when the patient’s immune system is suppressed with drugs to prevent them rejecting the organ. Standard tests often fail to pick up latent viruses before surgery, but the VirScan procedure could reveal their presence and alert doctors and patients to the danger.

are now enabled by default in the products of pioneering companies like Apple, ensuring that even if your phone is stolen, your private life remains private. Such structural technological changes can ensure access to basic privacies beyond borders, insulating ordinary citizens from the arbitrary passage of anti-privacy laws, such as those now descending upon Russia.

Spymasters in Australia, Canada and France have exploited recent tragedies to seek intrusive new powers despite evidence such programs would not have prevented attacks. Prime Minister David Cameron of Britain recently mused, “Do we want to allow a means of communication between people which we cannot read?” He soon found his answer, proclaiming that “for too long, we have been a passively tolerant society, saying to our citizens: As long as you obey the law, we will leave you alone.”

In 1954, the Japanese government created the Self-Defense Forces (SDF) in order to alleviate the United States’ burden of ensuring Japan’s security. At the time it argued for interpreting Article 9 (2) as recognizing Japan’s sovereign right to have a small military force. (The Supreme Court supported this reading in a 1959 ruling.) This construction — which has come to be known as the “minimum necessary level” — allowed the establishment of a force to defend Japan within its territory.

amending the Constitution is an onerous process, requiring at least a two-thirds majority in both houses of the Diet and a simple majority in a national referendum. It will also require overcoming the misguided objections of the reflexively antiwar set

Japan now understands that its prosperity and stability depend on global trade and on the peaceful resolution of any disputes. As one of the main beneficiaries of the international liberal order today, Japan is committed to the system — and it is committed to defending it, particularly against rising states like China, which are challenging the status quo

A moderate, sensible revision of the Constitution would be a modest step toward making Japan both a normal country and a more effective protector of the international order — and no less peace-loving.

And if anyone forces you to go one mile, go with him two. Meaning that if a master commands you to carry something a mile down the road, you carry it the mile, as commanded, but then you go the extra mile in protest

Non-violent protest of unfair civic institutions - a way to raise yourself up, without raising a hand. This is my Christ. This is why I still follow him.

To what extent are we shaped by, and to what degree do we shape, our own brains? And can the brain’s ability to change be harnessed to give us greater cognitive powers? The experiences of many people suggest that it can.

This growth can even happen within a matter of days.

Every time we practice an old skill or learn a new one, existing neural connections are strengthened and, over time, neurons create more connections to other neurons. Even new nerve cells can be generated.

Music is an especially powerful shaping force, for listening to and especially playing it engages many different areas of the brain

Whether it is by learning a new language, traveling to a new place, developing a passion for beekeeping or simply thinking about an old problem in a new way, all of us can find ways to stimulate our brains to grow

In a practical, immediate way, one sees the limits of the so-called “extended mind” clearly in the mob-made Wikipedia, the perfect product of that new vast, supersized cognition: when there’s easy agreement, it’s fine, and when there’s widespread disagreement on values or facts, as with, say, the origins of capitalism, it’s fine, too; you get both sides. The trouble comes when one side is right and the other side is wrong and doesn’t know it. The Shakespeare authorship page and the Shroud of Turin page are scenes of constant conflict and are packed with unreliable information. Creationists crowd cyberspace every bit as effectively as evolutionists, and extend their minds just as fully. Our trouble is not the over-all absence of smartness but the intractable power of pure stupidity, and no machine, or mind, seems extended enough to cure that.

“The medium does matter,” Carr has written. “As a technology, a book focuses our attention, isolates us from the myriad distractions that fill our everyday lives. A networked computer does precisely the opposite. It is designed to scatter our attention. . . . Knowing that the depth of our thought is tied directly to the intensity of our attentiveness, it’s hard not to conclude that as we adapt to the intellectual environment of the Net our thinking becomes shallower.”

when people struggle to describe the state that the Internet puts them in they arrive at a remarkably familiar picture of disassociation and fragmentation. Life was once whole, continuous, stable; now it is fragmented, multi-part, shimmering around us, unstable and impossible to fix.

The odd thing is that this complaint, though deeply felt by our contemporary Better-Nevers, is identical to Baudelaire’s perception about modern Paris in 1855, or Walter Benjamin’s about Berlin in 1930, or Marshall McLuhan’s in the face of three-channel television (and Canadian television, at that) in 1965.

If all you have is a hammer, the saying goes, everything looks like a nail; and, if you think the world is broken, every machine looks like the hammer that broke it.

Blair argues that the sense of “information overload” was not the consequence of Gutenberg but already in place before printing began.

Anyway, the crucial revolution was not of print but of paper: “During the later Middle Ages a staggering growth in the production of manuscripts, facilitated by the use of paper, accompanied a great expansion of readers outside the monastic and scholastic contexts.” For that matter, our minds were altered less by books than by index slips. Activities that seem quite twenty-first century, she shows, began when people cut and pasted from one manuscript to another; made aggregated news in compendiums; passed around précis. “Early modern finding devices” were forced into existence: lists of authorities, lists of headings.

The book index was the search engine of its era, and needed to be explained at length to puzzled researchers—as, for that matter, did the Hermione-like idea of “looking things up.” That uniquely evil and necessary thing the comprehensive review of many different books on a related subject, with the necessary oversimplification of their ideas that it demanded, was already around in 1500, and already being accused of missing all the points.

at any given moment, our most complicated machine will be taken as a model of human intelligence, and whatever media kids favor will be identified as the cause of our stupidity. When there were automatic looms, the mind was like an automatic loom; and, since young people in the loom period liked novels, it was the cheap novel that was degrading our minds. When there were telephone exchanges, the mind was like a telephone exchange, and, in the same period, since the nickelodeon reigned, moving pictures were making us dumb. When mainframe computers arrived and television was what kids liked, the mind was like a mainframe and television was the engine of our idiocy. Some machine is always showing us Mind; some entertainment derived from the machine is always showing us Non-Mind.

What we live in is not the age of the extended mind but the age of the inverted self. The things that have usually lived in the darker recesses or mad corners of our mind—sexual obsessions and conspiracy theories, paranoid fixations and fetishes—are now out there: you click once and you can read about the Kennedy autopsy or the Nazi salute or hog-tied Swedish flight attendants. But things that were once external and subject to the social rules of caution and embarrassment—above all, our interactions with other people—are now easily internalized, made to feel like mere workings of the id left on its own.

A social network is crucially different from a social circle, since the function of a social circle is to curb our appetites and of a network to extend them.

And so the peacefulness, the serenity that we feel away from the Internet, and which all the Better-Nevers rightly testify to, has less to do with being no longer harried by others than with being less oppressed by the force of your own inner life. Shut off your computer, and your self stops raging quite as much or quite as loud.

Now television is the harmless little fireplace over in the corner, where the family gathers to watch “Entourage.” TV isn’t just docile; it’s positively benevolent. This makes you think that what made television so evil back when it was evil was not its essence but its omnipresence. Once it is not everything, it can be merely something. The real demon in the machine is the tirelessness of the user.

the Internet screen has always been like the palantír in Tolkien’s “Lord of the Rings”—the “seeing stone” that lets the wizards see the entire world. Its gift is great; the wizard can see it all. Its risk is real: evil things will register more vividly than the great mass of dull good. The peril isn’t that users lose their knowledge of the world. It’s that they can lose all sense of proportion. You can come to think that the armies of Mordor are not just vast and scary, which they are, but limitless and undefeatable, which they aren’t.