Any contentment that Truecyte’s mutant of happiness feels, the rest of us can also experience, much more meaningfully, because more intermittently, through daily effort.

  The article gets e-mailed tens of thousands of times around the Net, and with every copy of the article comes a full-length color portrait of a woman in a pose suggesting euphoria. Her features have been Photoshopped out and replaced by the ubiquitous sunny smiley face.

  Countless Internet top feeders follow the happiness-gene kerfuffle in detail. They browse to the Behavioral Genomics site and give up in frustration halfway through the abstract. They surf to the Truecyte home page and take the Flash guided tour. They add a few new key terms to their newsreaders, plunge into numerous user groups, or lurk invisibly around the corners of the crazier brawls. They post questions on various Answers Forums, asking whether Jen is for real or some kind of medical composite.

  A Facebook user named OtherAngie confesses to being Jen. Her pokes explode, and within three days, her friend count skyrockets from 500 to 8,000+. Half the people leaving comments on her page dare her to prove the claim. She’s holding her own, spinning out elaborate accounts of her irrepressible psychohistory and her recent discovery by science, when three other Facebook users announce that she’s full of shit, because each of them happens to be Jen. Then a dozen people on MySpace jump the claim, and the game wipes out as fast as it started.

  The tag phrase “u r so jen” disseminates through the mobile texting community. By the end of the month, the word graduates from adjective all the way to verb. I jen you not.

  Sometime near the invention of writing, a single mutation began making its way through the human gene pool. The variant may have arisen once, somewhere in the Middle East. Or it may have appeared independently in the Arabian Peninsula and somewhere in Sweden. Whatever else the gene variation does, it prevents the lactase enzyme from being shut off after weaning. Those with the variation enjoy a prolonged digestive infancy and can drink milk their whole life long.

  When tribes began to keep domesticated cattle, the variant humans had a novel advantage: a food source the others couldn’t digest. Some three hundred generations later, most adults of Northern European ancestry can consume milk with impunity, with the skill still spreading around the globe like a pandemic.

  I want to know how long three hundred generations is, on an evolutionary scale. I want to know how fast lactose tolerance will move through the rest of the dairy-fed globe. I need to know how fast a tolerance for the lactose of human kindness might spread—how long it might take for the generosity haplotype to run through the race and fit us out with a new, stunning skill.

  Thassa gets wind of her anonymous renown. You’d have to be an off-the-grid Tuareg not to come across the happiness gene somewhere in some medium. And people who react to stories about the happiness gene also react to stories about the woman who has it in spades.

  She follows the mounting Jen speculation on blogs across the Web. She even leaves comments here and there, saying that no such creature exists. In fact, Jen is more imaginary to her than Gabe Weld’s little digital angel. If people want mystery and imagination and inexplicable temperament, they should just read Assia Djebar. The whole “genetically perfect happy woman” story will disappear as fast as last month’s runaway curiosity—a young man from Maryland who can tell with 98 percent accuracy when any other human being is lying. And Jen will leave no more lasting a trace.

  The doings of Thassa’s alter ego are the least of her worries. The spring semester is nearing its climax, and she’s struggling. The demands of the film curriculum and her own appetite leave her overstretched. She’s taking Advanced Production; Culture, Race, and Media; History of Documentary; Location Sound Recording; and Ecology, the last of her general-education requirements. She’s singing in the Balkan choir and trying to form a Maghrebi one. She’s showing Kabyle films to the weekly CineClub, where she’s already given elaborate presentations on Bouguermouh’s La Colline oubliée, Meddour’s La Montagne de Baya, and Hadjadj’s Machaho. She’s fallen in with bad mah-jongg influences. And she’s started what can only be called a liaison.

  It begins when Kiyoshi Sims, seated next to her in the media lab, shows her a transitions trick in the digital-video editing software. She, in turn, shows him how to sit for fifteen minutes in the school cafeteria without having a panic attack. Almost by chance, they develop a routine. He helps edit her semester studio project, a short composited sequence called Come Spring. And she slowly desensitizes him to going out deeper into public.

  By late April, they’ve graduated to the point where he can sit with her in that famous blues club on South State on a Friday afternoon, long enough to eat something. They share fried catfish and okra with honey-mustard sauce and beers that neither of them touch, listening to the Delta twelve-bar keening over the sound system. Kiyoshi has grown so bold as to drum along on the tabletop. Now and then he even rips a little air-guitar lick, although his riffs are so discreet it’s more like air ukulele. He stops when anyone nearby makes a sudden move.

  They sit in the shallows of contentment, just about to wrap things up and return to their respective Friday-night film editing, when Sue Weston discovers them. Neither of them has seen Artgrrl for weeks. They share a minireunion, after which a terrified Kiyoshi slips away and barricades himself in the men’s room.

  Sue shoots Thassa an I’m-onto-you grin. Thassa braces, preparing an explanation of the Sims-Amzwar special relationship. Surely the art-school ecosystem is broad enough to permit such a symbiosis.

  But Artgrrl blindsides her. “It’s you, isn’t it? The woman with the happiness genes. You’re all over the Net. Jen is Miss Generosity.”

  Thassa flips a fork across the table, decidedly ungenerous. “Jen is a scientific hallucination.”

  Artgrrl steps back, her face crinkling. “Of course it’s you!” She swallowed a little stimulant twenty minutes earlier, a prelude to Friday night, and it’s juked her up a notch. “I can’t believe nobody’s made the connection. I mean, those other stories about you, last winter? The whole hyper thing . . . ?”

  The Kabyle lowers her head and places her ear on the tabletop. “There is nothing special in my blood.”

  Weston sits down in Kiyoshi’s abandoned chair and places a hand on her shoulder. “Maybe not. But what difference does that make? This whole Jen thing is on the verge of being, like, the It deal of the season, and it’s not going to last much longer. You should go for this. Think of the eyeballs. You could post your films and get thousands . . . C’mon, girl. Fame is the new sex!”

  Thassa lifts her head, a dry little glint. “Hey! What about the old sex, first?”

  “Are you for real?”

  “I can’t help. I come from a repressive culture.”

  “Oh, my God.” The American covers her gaping mouth. “They didn’t . . . like, cut you or anything, over there?”

  “Oh, not that repressive culture! I mean Quebec.”

  Sue’s grin tries to steer into the skid.

  Thassa touches two fingers to her elbow. “You shouldn’t believe everything you think!”

  The suckered American fingers her lips. “You lying little minx!” She steps back from the Algerian, approving. “You’re messing with me.” But before Sue can right herself, Kiyoshi returns, hoping to retrieve his computer bag and make a clean getaway before the

  human-contact thing gets out of hand. Sue reappraises the shrinking boy and giggles with new admiration.

  Thassa follows Kiyoshi in escape. But before she can flee, Sue squeezes her goodbye, gauging her again with that gleam. You can’t hide from me, the look says. Have fun with Invisiboy, if you don’t kill him first.

  Later that night, Sue Weston logs in to her blog and posts her new entry: “Bird of Happiness, Tagged.” She spells out the argument with a clarity that would make her onetime writing instructor proud. She links to last November’s StreetSharp transcript, the Reader article, and all the noise of a few months
before. Just the facts. Nonfiction, without the creative. Her own kind of science, with first prize for priority.

  It’s not like she’s making facts public; the facts were never private to begin with. She’s twenty-one, young enough to know that there is no more public or private. There are only slow facts and fast facts, linked and unlinked, and every two sequences of value will eventually be correlated. Someone will publish the connection in another few days anyway, if she doesn’t. And why should someone else’s blog get all the eyeballs?

  Schiff arrives in El Kef with her guts emptied and her brain in a similar state. She stands at the window of her hotel room in the Ville Nouvelle, above the Place de l’Indépendance, too light-headed to make out much more than the massive Byzantine fortress looming up out of a tumble of stone and whitewashed plaster. The streets of the medina twist down from the Casbah’s foot. More town spills down the other slope, a jumble of white-and-tan blocks watched over by minarets and domes. The tip of a cellular radio tower peeks out above the fortress, puncturing Tonia’s Orientalist fantasy. Coming here was mad. She’s like a time traveler from the golden age of pulp science fiction, trying to change a future that has already happened.

  Schiff stands motionless, looking, until a heavyset man with a paintbrush mustache comes out on a balcony across the Place and returns her inspection. She turns back into her stale room. The detailed discovery of the town will wait a day, until she can do it right. As Thassa once told her, tomorrow will be there, as soon as you need it.

  Schiff sheds her crumpled road clothes and takes a lukewarm shower in the tiny, open stall. Her head still spins from the louage, and she never wants to eat again. She wraps herself in a towel and stretches out on the bed. She finds her ratty pocket spiral notebook and writes: We talk tomorrow. For a moment, the whole expedition seems almost plausible. If I can record ten minutes, I’ll be happy.

  All the while, she pretends she isn’t jonesing to discover whether the world as she knows it has continued to exist during her day away. At three minutes to the hour, she casually flips on the television (a broken remote left ceremoniously on the bedside table by the hotel staff) and trawls the channels like the worst of quidnuncs.

  This two-star hotel in an outpost of forty thousand people in a remote western province of a little country wedged between the chaos of Algeria and the void of Libya pulls in more cosmopolitan broadcasts than she gets in New York. She pounces on the BBC like a starving person. The world is much as she left it. The day has gone like any other, held hostage by the past and doomed by coming appointments. In that closet hotel, each news story announces either imminent extinction or embryonic breakthrough. Hotel residents everywhere—any passenger in transit this night—must be forgiven for thinking that life will be solved at last, one way or the other, by the time they get home.

  She flicks off the set and, in the highland silence of that molding room, opens her carry-on. She pulls out a plastic case packed with disks like makeup mirrors, each one storing hours of video. She’s packed only three days of clothes, but more digital clips than she could watch in three weeks. The secret of happiness is meaningful work.

  She flips through her archive, the clips she’ll splice together to make her own real firstborn. In the middle of the stiff bed, surrounded by time capsules, she loads a short feature on the most notorious infant in living memory. The girl with that perfectly archaic middle name: Joy.

  Whiplashing to think that the footage is three decades old. But the basic trope goes back millennia: a dangerous, destabilizing baby smuggled clandestinely into an unsuspecting world. The doctors don’t even tell the prospective parents that their little girl will be the first of her kind. Tonia sits on the bed, watching the videotaped birth, a message posted forward to whatever people might inhabit the evolved future. The infant head crowns on Schiff’s screen, and there is Louise Joy Brown, an impossibly slight five and three-quarters pounds, crying her lungs out in that first crisis, air.

  The birth cries are nothing, compared to the ones they touch off. Perfectly moderate commentators face the camera and declare the doom of the human race. Almost ridiculous now, this dated hysteria. But almost right.

  Schiff sits up in the bed and glances back out the window. A corsage of yellow lights now trace Kef’s edges all the way up the jagged mountain. This town’s basic cure for sterility may often still involve a prayer at the local zaouia. But then, so does New York’s.

  Tonia turns back to the warnings posted forward from a previous planet. Later technologies make that first artificial conception look like a Hail Mary play. Intrafallopian transfer, intracytoplasmic sperm injection: a dozen of her friends have shopped from that list. A few hundred thousand IVF babies make their way through this night, as dark swings around the globe. The process is nothing now, and the real show is only getting started. A new industry, following only voluntary guidelines, already screens embryos for hundreds of genetic diseases. And Tonia Schiff will bet her return ticket that some billionaire, somewhere, is already paying to have his offspring screened for good traits. The race will take to selling characteristics on websites, like downloadable songs, the day it becomes possible.

  She ejects the disk and flips through the stack, looking for the second half of tonight’s double feature. She has documentaries and biographies, old news clips on engineered bacteria, gene transfer, the world-famous photogenic sheep, xenotransplantation, embryos from skin DNA transplanted into eggs, embryos with two mothers and a father, and, from last week, the application for exclusive ownership of a wholly synthetic organism.

  Apocalypse has become too commonplace to feel. Of the scribbling in books, there is no end. And all our writing will in time come alive.

  She takes notes until she falls asleep. And falling asleep, she’ll tell herself that she asks for almost nothing: one more documentary, one more interview, one more clandestine infant named Joy. But the rim of cliffs guarding this ancient town mock any theme she might care to film.

  Because Donna Washburn, the author of the Reader feature, googles her own name only once every two days, a full twenty-one hours pass before she sees herself mentioned in Sue Weston’s blog. Immediately Washburn leaves a message on Thassa’s voice mail, asking for confirmation. But Thassa doesn’t reply by the time the next week’s Reader is put to bed. So the paper runs an “unconfirmed rumor” squib. By the time the bit runs, it’s redundant. Jen’s secret identity has started to proliferate through the Web. Within a week, she’s pretty much a publicly traded commodity.

  Three weeks before final exams, and Thassadit Amzwar is working flat out on Come Spring, trying to get a rough cut done before semester’s end. She hardly even notices the ripples. In this country, where continent-wide cultural transformations root, take over the biosphere, and go extinct several times in every twenty-four-hour news cycle, all she has to do is hunker down, finish the term, and wait until the public attention drifts back to celebrity divorces and custody fights, where it belongs.

  The first assault is a simple repeat of last fall. She tries her best to answer the surge of e-mails. A few dozen fanboys and postpartum mothers write to ask, Is Jen really you? How old were you when you first realized that your genes were making you joyous? Does it still work late at night in winter? Could we meet for coffee, for a chat, for just forty-five minutes? I could be there on Thursday. Minneapolis isn’t all that far from Chicago . . .

  She’s gentle with these people; it’s not their fault they’ve been misled. After a few days, she reverts to a form letter. It breaks her heart, but she has no choice. She tries to add a personalized sentence at the end of every reply. When she begins to get replies to her replies, she grits her teeth and ignores them.

  Then the phone starts ringing. It’s Self magazine. Then People. Then Psychology Today. She gives a couple of phone interviews without even realizing she’s doing so. She gives another one, just by trying to explain that she doesn’t want to talk about what’s not worth talking about. A journalist from
the Trib begs her to come down to Rhapsody and just have a sandwich. She can hear in his voice that he’s a fine man with a wife and children who only wants to do his job as best as he can; having a sandwich while explaining the massive misunderstanding can’t do any more harm. When Thassa gets to Rhapsody, there’s a photographer lying in wait alongside the journalist. And this photographer woman—a graduate of Mesquakie—is also just doing her job and living her art.

  The interviewers keep asking her to describe exactly how it feels to be exuberant. She asks them, “You have never been?” Yes, they say, but . . . all the time? No, she says. Cheerful often. Exuberant sometimes, perhaps frequently, depending on the tally. Everyone alive should feel richly content, ridiculously ahead of the game, a million times luckier than the unborn. What more can she tell them?

  They want to know whether she inherited her bliss, whether it comes from the environment, or whether she’s simply willed herself to be happy. She tells them honestly: she hasn’t a clue. They ask if other people in her family are as happy as she is. She says she’d never presume to say how happy anyone else might be.

  After four days of the circus, she stops answering her phone. But it tears her up to hear the messages left on her voice mail. She can’t listen to them and not call them back. At the same time, she’d dearly like to finish the semester without flunking out. The only answer is to cancel her phone service and start a new one.

  This doesn’t prevent total strangers who see the Tribune photo from stopping her in the street and greeting her warmly. But then, she used to stop total strangers in the street and greet them the same way. So it’s a wash, and she meets some nice people as a result. Many people she meets tell her how exhilarating it is, just to talk to her. That feels like considerable evidence, to her unscientific mind, that the disease is more contagious than genetic. But no venture capitalists step forward to fund a double-blind controlled study.