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great gaming experiences speak to our inner desire for mastery, autonomy and purpose, Mr. Zichermann noted. The same can be said of travel. “Why do we travel?” he said. “It’s all about creating memories and discovering ourselves. Gamification is perfectly aligned with that.”

Gamification can engage people simply by making travel more playful and social, like Virgin America’s new seat-to-seat delivery feature that encourages fliers to “get lucky” by sending one another cocktails and messages through the entertainment system touchscreens on seatbacks

Even acquiring travel skills has become a game with language-learning Web sites like Duolingo and MindSnacks.

Despite gamification’s popularity, there are many poorly designed experiences. In fact, the technology research company Gartner is predicting that by next year 80 percent of gamification projects will fail to meet business objectives. When done right, however, gamification can garner brand loyalty while also helping travelers interact, learn, share opinions and explore the world.

companies that specialize in gamification say they are trying to design experiences that are emotional, that delight or surprise, unlike early loyalty programs

The Foreign Intelligence Surveillance Act was adopted in 1978 and amended in 2008, with the addition of new surveillance authority and procedures, which are continued by the bill approved on Friday. The 2008 law was passed after the disclosure that President George W. Bush had authorized eavesdropping inside the United States, to search for evidence of terrorist activity, without the court-approved warrants ordinarily required for domestic spying.

By a vote of 52 to 43, the Senate on Friday rejected a proposal by Mr. Wyden to require the national intelligence director to tell Congress if the government had collected any domestic e-mail or telephone conversations under the surveillance law. The Senate also rejected, 54 to 37, an amendment that would have required disclosure of information about significant decisions by a special federal court that reviews applications for electronic surveillance in foreign intelligence cases.

The No. 2 Senate Democrat, Richard J. Durbin of Illinois, said the surveillance law “does not have adequate checks and balances to protect the constitutional rights of innocent American citizens.” “It is supposed to focus on foreign intelligence,” Mr. Durbin said, “but the reality is that this legislation permits targeting an innocent American in the United States as long as an additional purpose of the surveillance is targeting a person outside the United States.”

Mr. Merkley said the administration should provide at least unclassified summaries of major decisions by the Foreign Intelligence Surveillance Court. “An open and democratic society such as ours should not be governed by secret laws,” Mr. Merkley said, “and judicial interpretations are as much a part of the law as the words that make up our statute.”

Mr. Wyden said these writs reminded him of the “general warrants that so upset the colonists” more than 200 years ago. “The founding fathers could never have envisioned tweeting and Twitter and the Internet,” Mr. Wyden said. “Advances in technology gave government officials the power to invade individual privacy in a host of new ways.”

When the hunger comes, Ms. Petrakis has a solution. “It’s simple,” she said. “You get hungry, you get dizzy and you sleep it off.”

He has not found work for three years. Now, he said, his family is living on what he called “a cabbage-based diet,” which it supplements by foraging for snails in nearby fields. “I know you can’t cover nutritional basics with cabbage,” he said bitterly. “But there’s no alternative.”

Mr. Nikas, the principal at 11-year-old Pantelis’s school, has taken matters into his own hands and is organizing food drives at the school. He is angry at what he sees as broader neglect of Greece’s troubles by Europe. “I’m not saying we should just wait for others to help us,” he said. “But unless the European Union acts like this school, where families help other families because we’re one big family, we’re done for.”

the Internet is a wonder when it comes to generating “cheap fun.” But because “so many of its products are free,” and because so much of a typical Web company’s work is “performed more or less automatically by the software and the servers,” the online world is rather less impressive when it comes to generating job growth.

the more purely digital a company’s product, the fewer jobs it tends to create and the fewer dollars it can earn per user

From the lowbrow to the highbrow, LOLcats to Wikipedia, vast amounts of Internet content are created by people with no expectation of remuneration. The “new economy,” in this sense, isn’t always even a commercial economy at all. Instead, as Slate’s Matthew Yglesias has suggested, it’s a kind of hobbyist’s paradise, one that’s subsidized by surpluses from the old economy it was supposed to gradually replace.

Despite nearly two decades of dot-com enthusiasm, the information sector is still quite small relative to other sectors of the economy; it currently has one of the nation’s higher unemployment rates; and it’s one of the few sectors where unemployment has actually risen over the last year.

None of this makes the Internet any less revolutionary. But it’s created a cultural revolution more than an economic one.

Dr. Church looks forward to the day when current research becomes a routine clinical procedure that combines inherited genomic information with analyses of RNA, proteins, metabolites and microbes in our bodies.

the cost to collect molecular data from each blood sample was about $2,500 — which did not include the cost of analysis. But the price for tests similar to Dr. Snyder’s will also decline in the future

Dr. Snyder is a co-founder of a company, Personalis, in Palo Alto, Calif., that is developing software and other tools to interpret genomes after sequencing

“I mean, what would you do if you were Roberts? All of a sudden you find out that the people you thought were your friends have turned against you, they despise you, they mistreat you, they leak to the press. What do you do? Do you become more conservative? Or do you say, ‘What am I doing with this crowd of lunatics.’ Right? Maybe you have to reexamine your position.”

wealthy students from private and expensive, co-pay charter schools have unfair access to elite universities, while the rest struggle to meet entrance standards at under-financed public institutions.

Echoing 1960s street activism, the Chilean Winter dabbled in the absurd, but with a high-tech, social-media twist. Thousands gathered in front of the presidential palace in June dressed as zombies, then broke into a choreographed dance to Michael Jackson’s “Thriller.” In July, students again gathered in front of the palace for a huge “kiss-in.” Though the ideas came, said Giorgio Jackson, former student president of Chile’s Catholic University, from “everywhere, absolutely every local space,” the movement’s success hinged on the leadership’s ability to channel such creativity while maintaining a unified front to government and the media. The organization used a Web site to gather ideas and disseminate content for placards and posters. And it has used Ms. Vallejo’s 300,000-plus Twitter followers to quickly initiate huge “cacerolazos,” a form of dictatorship-era protest where people walk the streets banging on pots and pans.

“Something very powerful that has come out of the heart of this movement is that people are really questioning the economic policies of the country,” Ms. Vallejo said. “People are not tolerating the way a small number of economic groups benefit from the system. Having a market economy is really different from having a market society. What we are asking for, via education reform, is that the state take on a different role.”

“The student movement here is permanently connected to other student movements, principally in Latin America, but also in the world,” Ms. Vallejo said. “We believe this reveals something fundamental: that there is a global demand for the recovery and defense of the right to education.”

This may be Ms. Vallejo’s greatest contribution: to restore faith in a discredited system by showing a new generation that politics can be responsive to the people’s demands.

The Wangemann cylinders are just the latest in an explosion of discoveries in early recorded sound over the last five years, said Tim Brooks, a sound historian in Greenwich, Conn. In 2008, Dr. Feaster and his colleagues at FirstSounds.org succeeded in playing a version of the French lullaby “Au Clair de la Lune,” deciphered from a tracing in soot-coated paper dating from 1860 — the earliest sound ever recovered. A trove of cylinders recorded in Russia in the 1890s was also recently uncovered.

The ability to digitize old recordings and the use of new imaging techniques to map the grooves of damaged cylinder records without touching them has contributed to the onslaught, Mr. Brooks said, adding, “You can actually hear history as well as read about it.

“Along with sharing the movie online, Invisible Children’s call to action is to do three things: 1) sign its pledge, 2) get the Kony 2012 bracelet and action kit (only $30!), and 3) sign up to donate,” a deconstruction of the film on the Web site of Foreign Policy reads.

some experts said Invisible Children’s campaign, while oversimplified, could help add to the international resolve to stop the killing.

Invisible Children “is essentially distilling a very complicated 26-year war into something that’s consumable and understandable by mass media.”

as a filmmaker, he said he had already received plaudits from producers in Hollywood. “They are getting in touch with the Academy Awards. They want this to be up for an Oscar.”

“A lot of libraries are doing pretty drastic weeding,” said Judith Russell, the University of Florida’s dean of libraries who is sending the archive duplicate scholarly volumes. “It’s very much more palatable to us and our faculty that books are being sent out to a useful purpose rather than just recycled.”

“Microfilm and microfiche were once a utopian vision of access to all information,” Mr. Kahle noted, “but it turned out we were very glad we kept the books.”

If serious “1984”-style trouble does arrive, Mr. Lesk said, it might come as “all Internet information falls under the control of either governments or copyright owners.” But he made clear he thought that was unlikely.

Before the books make it the 150 feet to the shipping containers for storage, some will have to travel 12,000 miles to China. The Chinese, who are keen to build a digital library, will scan the books for themselves and the archive and then send them back. The digital texts will be available for the visually impaired and other legal purposes.

The group was persuaded to take its more drastic step when a study of second-grade football players published in February — which used data from sensors installed in helmets — showed that the average player sustained more than 100 head impacts during the course of about 10 practices and 5 games. Though most of those hits were moderate, some exceeded a force equivalent to a big hit in college football.

humans are not necessarily ideal graders: they provide an average of only three minutes of attention per essa

We are talking here about providing a very rough kind of measurement, the assignment of a single summary score on, say, a seventh grader’s essay

“A few years back, almost all states evaluated writing at multiple grade levels, requiring students to actually write,” says Mark D. Shermis, dean of the college of education at the University of Akron in Ohio. “But a few, citing cost considerations, have either switched back to multiple-choice format to evaluate or have dropped writing evaluation altogether.”

As statistical models for automated essay scoring are refined, Professor Shermis says, the current $2 or $3 cost of grading each one with humans could be virtually eliminated, at least theoretically.

As essay-scoring software becomes more sophisticated, it could be put to classroom use for any type of writing assignment throughout the school year, not just in an end-of-year assessment. Instead of the teacher filling the essay with the markings that flag problems, the software could do so. The software could also effortlessly supply full explanations and practice exercises that address the problems — and grade those, too.

the cost of commercial essay-grading software is now $10 to $20 a student per year. But as the technology improves and the costs drop, he expects that it will be incorporated into the word processing software that all students use

“Providing students with instant feedback about grammar, punctuation, word choice and sentence structure will lead to more writing assignments,” Mr. Vander Ark says, “and allow teachers to focus on higher-order skills.”

When sophisticated essay-evaluation software is built into word processing software, Mr. Vander Ark predicts “an order-of-magnitude increase in the amount of writing across the curriculum.”

the essay-scoring software that he and his teammates developed uses relatively small data sets and ordinary PCs — so the additional infrastructure cost for schools could be nil.

the William and Flora Hewlett Foundation sponsored a competition to see how well algorithms submitted by professional data scientists and amateur statistics wizards could predict the scores assigned by human graders. The winners were announced last month — and the predictive algorithms were eerily accurate.

wanted to create a neutral and fair platform to assess the various claims of the vendors. It turns out the claims are not hype.”

How did we get here? First, by taking gerrymandering to a new level.

the 2010 election gave Republican state legislatures around the country unprecedented power to redraw political boundaries, which they used to create even more “safe, lily-white” Republican strongholds that are, in effect, an “alternative universe” to the country’s diverse reality.

while the country continues to grow more racially diverse, the average Republican district continues to get even whiter.”

the number of strongly Democratic districts decreased from 144 before redistricting to 136 a

fterward. The number of strongly Republican districts increased from 175 to 183.

there is little risk of political punishment for the Tea Party members now holding the country hostage.

the Supreme Court’s inane Citizens United decision allowed a single donor, Sheldon Adelson, to create his own alternative universe. He was able to contribute so much money to support Newt Gingrich’s candidacy that Gingrich was able to stay in the Republican presidential primary race longer than he would have under sane campaign finance rules. As a result, Gingrich was able to pull the G.O.P.’s leading candidate, Mitt Romney, farther to the right longer, making it harder for him to garner centrist votes.

the rise of a separate G.O.P. (and a liberal) media universe — from talk-radio hosts, to Web sites to Fox News — has created another gravity-free zone, where there is no punishment for extreme behavior, but there’s 1,000 lashes on Twitter if you deviate from the hard-line and great coverage to those who are most extreme.

These “legal” structural changes in money, media and redistricting are not going away. They are superempowering small political movements to act in extreme ways without consequences and thereby stymie majority rule. If democracy means anything, it means that, if you are outvoted, you accept the results and prepare for the next election. Republicans are refusing to do that. It shows contempt for the democratic process.

“In a period where the whole Middle East is moving in the direction of chaos, having one area where the parties are trying to further stabilize their relationship is a positive development,” said Dore Gold, a longtime Israeli diplomat and president of the Jerusalem Center for Public Affairs. “The fact that they continue to talk means these are serious discussions. Where this goes, what’s the likely outcome, I think it’s really way too early to predict.”

In contrast to previous rounds of Israeli-Palestinian talks, little has leaked from the negotiating room.

Palestinians are split, with 47 percent supporting the resumption of negotiations and 49 percent opposed, according to a September survey by the Palestinian Center for Policy and Survey Research; 70 percent think they will not lead to an agreement. Sixty-one percent of Israeli Jews back the talks, according to the Israel Democracy Institute’s Peace Index published this month, but 81 percent see no real chance of a deal.

“For both sides the current situation is very, very comfortable,” Mr. Beilin said. “All of us are playing the game. Many meetings, very serious, good relationship, all issues are on the agenda, fighting the lunatics on both sides, and it’s beautiful. The only problem is that there will be an end to it in the coming months, and the admission of failure might be devastating.”

“This ruling should serve as a notice to Spain to correct continuing aberrations of justice in the name of fighting terrorism, such as incommunicado detention and limited rights of defense for terrorism suspects,”

Still, Madrid has refused to consider ETA’s cease-fire a sufficient act of surrender, saying that it would continue to hunt down ETA members, in cooperation with the French and other European security forces, until the group handed over all its weapons.

Mr. Gaucher sees all these efforts as an example of French journalists’ predilection for being clever and writerly, but not necessarily for producing what might elsewhere be considered good journalism.

“There are a lot of journalists in France who are more or less consciously writers who don’t write and here suddenly in the summer they have a bit of space, they have a bit of time to address topics that aren’t journalism anymore,” he said.

My own view is that if you decide to go kill a bunch of innocent people, it’s a pretty safe bet that you’re not a picture of mental health. But that doesn’t sever the link between you and the people who inspired you, or insulate them from responsibility. Glenn Beck knows that there are lots of unbalanced people out there, and that his message reaches some of them. This doesn’t make him morally culpable for the way these people react to things he says that are true. It doesn’t even make him responsible for the things he says that are false but that he sincerely believes are true. But it does make him responsible for things he says that are false and concocted to mislead gullible people.

What’s not transient, unfortunately, is the technological trend that drives much of this. It isn’t just that people can now build a cocoon of cable channels and Web sites that insulates them from inconvenient facts. It’s also that this cocoon insulates them from other Americans — including the groups of Americans who, inside the cocoon, are being depicted as evil aliens. It’s easy to buy into the demonization of people you never communicate with, and whose views you never see depicted by anyone other than their adversaries.

Like other education debates, this one divides along ideological lines. K-12 online learning is championed by conservative-leaning policy groups that favor broadening school choice, including Jeb Bush’s Foundation for Excellence in Education, which has called on states to provide all students with “Internet access devices” and remove bans on for-profit virtual schools.