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Social scientists have a name for this sort of incessant online contact. They call it “ambient awareness.” It is, they say, very much like being physically near someone and picking up on his mood through the little things he does — body language, sighs, stray comments — out of the corner of your eye

This is the paradox of ambient awareness. Each little update — each individual bit of social information — is insignificant on its own, even supremely mundane. But taken together, over time, the little snippets coalesce into a surprisingly sophisticated portrait of your friends’ and family members’ lives, like thousands of dots making a pointillist painting

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These theories, however, were developed in a time when learning was not impacted through technology.

In many fields the life of knowledge is now measured in months and years.

When we designed the Internet the first time, our priorities were reliability, robustness and minimizing central points of failure or control. We are alarmed that Congress is so close to mandating censorship-compliance as a design requirement for new Internet innovations. This can only damage the security of the network, and give authoritarian governments more power over what their citizens can read and publish. The US government has regularly claimed that it supports a free and open Internet, both domestically and abroad. We cannot have a free and open Internet unless its naming and routing systems sit above the political concerns and objectives of any one government or industry. To date, the leading role the US has played in this infrastructure has been fairly uncontroversial because America is seen as a trustworthy arbiter and a neutral bastion of free expression. If the US begins to use its central position in the network for censorship that advances its political and economic agenda, the consequences will be far-reaching and destructive.

This is in many ways a wonderful thing. There is strength in weak ties, as the sociologist Mark Granovetter has observed. Our acquaintances—not our friends—are our greatest source of new ideas and information. The Internet lets us exploit the power of these kinds of distant connections with marvellous efficiency. It’s terrific at the diffusion of innovation, interdisciplinary collaboration, seamlessly matching up buyers and sellers, and the logistical functions of the dating world. But weak ties seldom lead to high-risk activism.

The evangelists of social media don’t understand this distinction; they seem to believe that a Facebook friend is the same as a real friend and that signing up for a donor registry in Silicon Valley today is activism in the same sense as sitting at a segregated lunch counter in Greensboro in 1960.

limited Times

 To do just that, on his first full day in office, the President signed two critical documents that have shaped the Administration: the Memorandum on Transparency and Open Government and the Executive Order on Ethics. As a result of the Memorandum on Transparency, we have since Day One, worked to empower the public – through greater openness and new technologies – to influence the decisions that affect their lives.

"Avatar was a true classic of its time,

"Our hipper, bolder, and updated movie is sure to resonate with younger generations and older fans alike."

The US exhibit included the: McCormack Reaper, Colt Revolver, a 16,400 lb hunk of zinc, unpickable locks, a model of Niagara Falls and a piano that could be played by 4 people at the same time.

The Egyptian Court featured the hieroglyphic "Rosetta Stone"

Items on display included: the Jacquard loom, an envelope machine that could handle 60 pieces a minute, Lucifer matches, tools, steam engines, kitchen appliances, steel-making displays, powdered graphite in the form of yellow pencils, McCormack Reaper, Bowie knives, Swiss watches, a stuffed elephant, 40 foot scale model of the London docks with 1600 miniature ships, a knife with 1851 blades, prototype submarine, farm equipment, electric clocks, washing machine, false teeth, artificial limbs, chewing tobacco, centrifugal pump, Jacquard lace machine, steam-press, camerae-obscurae, Caloric Engine, Colt's Pistols, Prouty and Mears' Plows, American Bridges, household furniture made of coal, rhubarb champagne, artificial arms and legs, two chairs designed by Mr. Carl Leistler, centrifugal impellers (pumps).