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"WHEN colleges and universities finally decide to make full use of the Internet, most professors will lose their jobs. Enlarge This Image Many leading universities have put free videos online featuring their best lecturers. One aggregator site, Academic Earth, offers 150 courses. That includes me. I'm not worried, though, at least for the moment. Amid acute budget crises, state universities like mine can't afford to take that very big step - adopting the technology that renders human instructors obsolete. "

Try reading a book while doing a crossword puzzle, and that, says author Nicholas Carr, is what you're doing every time you use the Internet. Carr is the author of the Atlantic article Is Google Making Us Stupid? which he has expanded into a book, The Shallows: What the Internet Is Doing to Our Brains. Carr believes that the Internet is a medium based on interruption - and it's changing the way people read and process information. We've come to associate the acquisition of wisdom with deep reading and solitary concentration, and he says there's not much of that to be found online.

"Melvyn Bragg and guests John Barrow, Colva Roney-Dougal and Marcus du Sautoy explore the unintended consequences of mathematical discoveries, from the computer to online encryption, to alternating current and predicting the path of asteroids. In his book The Mathematician's Apology (1941), the Cambridge mathematician GH Hardy expressed his reverence for pure maths, and celebrated its uselessness in the real world. Yet one of the branches of pure mathematics in which Hardy excelled was number theory, and it was this field which played a major role in the work of his younger colleague, Alan Turing, as he worked first to crack Nazi codes at Bletchley Park and then on one of the first computers. Melvyn Bragg and guests explore the many surprising and completely unintended uses to which mathematical discoveries have been put."

"They and others had been searching for answers and grappling with their implications since Sunday, when Weight Watchers began unveiling its first major overhaul to its cultlike points system, prompting the 750,000 members who attend weekly meetings across the United States - and some one million online adherents - to rethink how they shop, cook and eat. The new plan, company officials say, is based on scientific findings about how the body processes different foods. The biggest change: All fruits and most vegetables are point-free (or free of PointsPlus, as the new program is called). Processed foods, meanwhile, generally have higher point values, which roughly translates to: should be eaten less. "

"An online poll conducted in the '90s set Vitaly Komar, Alex Melamid and David Soldier on a quest to create the most annoying song ever. After gathering data about people's least favorite music and lyrical subjects, they did the unthinkable: they combined them into a single monstrosity, specifically engineered to sound unpleasant to the maximum percentage of listeners. The song is not new, but it resurfaced on Dial "M" for Musicology. Amazingly, this "most unwanted music" contains little dissonance - that would have been too easy. For the most part, they seem to have tried to assemble these elements in a listenable way. Komar & Melamid and David Soldier's list of undesirable elements included holiday music, bagpipes, pipe organ, a children's chorus and the concept of children in general (really?), Wal-Mart, cowboys, political jingoism, George Stephanopoulos, Coca Cola, bossanova synths, banjo ferocity, harp glissandos, oompah-ing tubas and much, much more. It's actually a fascinating listen, worthwhile for the opera rapping alone. (We didn't think that was possible either.)"

"FaceResearch.org allows you to participate in short online psychology experiments looking at the traits people find attractive in faces and voices. Register to participate in experiments if this is your first time at FaceResearch.org or login if you have been here before. Make your own average faces with our interactive demos! In addition to participating in facial attractiveness experiments, you can also complete lifestyle and personality questionnaires about characteristics that may be associated with face and voice preferences and see how you compare to others. We post all our study results after we have finished collecting data. You can also learn about our computer-graphic technology and read about some of the findings of our previous studies."

"These two ardorable boys bring a new meaning to the phrase "baby talk". A video of twin baby boys Sam and Ren having a hilarious conversation in their own language has become a web hit, after being posted online on Valentine's Day. "

"Seeing the world as black and white, in which choices seem clear, or shades of gray can affect people's path in life, from jobs and relationships to which political candidate they vote for, researchers say. People who often have conflicting feelings about situations-the shades-of-gray thinkers-have more of what psychologists call ambivalence, while those who tend toward unequivocal views have less ambivalence.\n\nHigh ambivalence may be useful in some situations, and low ambivalence in others, researchers say. And although people don't fall neatly into one camp or the other, in general, individuals who tend toward ambivalence do so fairly consistently across different areas of their lives. "

"There are frequent analogies going around these days between events in Cairo and the rise and fall of demonstrations in Tiananmen Square. "We cannot afford a Tiananmen Square in Cairo," Senator John McCain said on CNN. One of the few who is well qualified to draw a comparison is Nick Kristof, who shared a Pulitzer Prize for his coverage of the 1989 protests and crackdown in Beijing. Arriving in Tahrir Square yesterday, he wrote that the mood "reminds me, painfully, of the equally giddy mood at Tiananmen Square before the shooting started. Some of the regime's moves-earlier curfew, buzzing protesters with fighter planes, nasty media-don't seem conciliatory at all." One of the few to frame the comparison in positive terms is the liberal Chinese activist-lawyer Teng Biao; when he saw the video of a lone Egyptian protester, standing before a truck fitted with a water-cannon, he wrote on Twitter, "'Must see! Egypt's Tiananmen movement, a warrior blocks a military vehicle!'""

"As web companies strive to tailor their services (including news and search results) to our personal tastes, there's a dangerous unintended consequence: We get trapped in a "filter bubble" and don't get exposed to information that could challenge or broaden our worldview. Eli Pariser argues powerfully that this will ultimately prove to be bad for us and bad for democracy. "