Bobbi Duncan desperately wanted her father not to know she is lesbian. Facebook told him anyway.

One evening last fall, the president of the Queer Chorus, a choir group she had recently joined, inadvertently exposed Ms. Duncan’s sexuality to her nearly 200 Facebook friends, including her father, by adding her to a Facebook Inc. discussion group. That night, Ms. Duncan’s father left vitriolic messages on her phone, demanding she renounce same-sex relationships, she says, and threatening to sever family ties. […]

Soon, she learned that another choir member, Taylor McCormick, had been outed the very same way, upsetting his world as well.

The president of the chorus, a student organization at the University of Texas campus here, had added Ms. Duncan and Mr. McCormick to the choir’s Facebook group. The president didn’t know the software would automatically tell their Facebook friends that they were now members of the chorus.

The two students were casualties of a privacy loophole on Facebook—the fact that anyone can be added to a group by a friend without their approval. As a result, the two lost control over their secrets, even though both were sophisticated users who had attempted to use Facebook’s privacy settings to shield some of their activities from their parents.

{ WSJ | Continue reading }

photo { Ray K. Metzker }

A single mysterious computer program that placed orders — and then subsequently canceled them — made up 4 percent of all quote traffic in the U.S. stock market last week, according to the top tracker of high-frequency trading activity. The motive of the algorithm is still unclear.

The program placed orders in 25-millisecond bursts involving about 500 stocks, according to Nanex, a market data firm. The algorithm never executed a single trade, and it abruptly ended at about 10:30 a.m. ET Friday.

{ CNBC | Continue reading }

“If we can utilize Twitter and Facebook to integrate our brand with other established players, we stand to boost our profile in all the key demographics,” said the 33-year-old Brooks, who last night lay in bed staring at the ceiling, tears dripping down his face as he realized the thing he puts so much effort into is so vacuous and void of meaning that his younger self would be disgusted by his pursuit of an occupation that ultimately doesn’t need to exist.

{ The Onion | Continue reading | Thanks Rachel }

photos { Stacy Mehrfar and Amy Stein | Janine Antoni }

One of the many consequences of global warming is that it’s now, for the first time, possible to drill under the sea bed of the Arctic ocean. The oil companies are all there, of course, running geological tests and bickering with each other about the potential environmental consequences of an oil spill. But they’re not the only people drilling. Because there’s something even more valuable than oil just waiting to be found under the Arctic.
What is worth so much money that three different consortiums would spend billions of pounds to retrofit icebreakers and send them into some of the coldest and most dangerous waters in the world? The answer, of course, is information.

A couple of days ago, I called a friend in Tokyo, and we had a lovely chat. If he puts something up on Twitter, I can see it immediately. And on the web there are thousands of webcams showing me what’s going on in Japan this very second. It doesn’t look like there’s any great information bottleneck there: anything important which happens in Japan can be, and is, transmitted to the rest of the world in a fraction of a second.

But if you’re a City trader, a fraction of a second is a veritable eternity. Let’s say you want to know the price of a stock on the Tokyo Stock exchange, or the exact number of yen being traded for one dollar. Just like the light from the sun is eight minutes old by the time it reaches us, all that financial information is about 188 milliseconds old by the time it reaches London. That’s zero point one eight eight seconds. And it takes that much time because it has to travel on fiber-optic cables which take a long and circuitous route: they either have to cross the Atlantic, and then the US, and then the Pacific, or else they have to go across Europe, through the Middle East, across the Indian Ocean, and then up through the South China Sea between China and the Philippines.

But! If you can lay an undersea cable across the Arctic, you can save yourself about 5,000 miles, not to mention the risk of routing your information past a lot of political flash points. And when you’re sitting in your office in London and you get that dollar/yen exchange rate from Tokyo, it’s fresh from the oven, comparatively speaking: only 0.168 seconds old. If everybody else is using the old cables and you’re using the new ones, then you have somewhere between 20 milliseconds and 60 milliseconds when you know something they don’t.

Those are periods of time so short that humans can barely notice them. This essay, for instance, is about 900,000 milliseconds long, and it takes me hundreds milliseconds just to say the word “cable”. Which is a word with more than one meaning. To you, it probably means some kind of wire. But to City traders, it means 1.6254, or something very close to that number. Because in the City, “cable” means the pound/dollar exchange rate. And it’s named that after a transatlantic cable which was used to telegraph the exchange-rate information from London to New York as far back as 1858. […]

Obviously, only computer algorithms can make money from an information advantage which is measured in milliseconds. It’s computers which are making the decisions to buy and sell: if they had to wait for a human to sign off on those things, they’d never make any money at all. […] The more obvious problem with exchanges run by computers is that computers don’t have any common sense.

{ Felix Salmon/Reuters | Continue reading }

photo { Edward Weston }

{ Progress in Automatic Giraffe Recognition | Improbable Research | Detecting, Localizing and Recovering Kinematics of Textured Animals | PDF }

Players build their own spaceships and traverse a galaxy of 7,500 star systems. They buy and sell raw materials, creating their own fluctuating markets. They speculate on commodities. They form trade coalitions and banks. […]

Nowadays, many massively multiplayer online video games have become so complex that game companies are turning to economists for help. […]

In Eve Online, Guðmundsson oversees an economy that can fluctuate wildly — he says it expanded 42 percent between February 2011 and February 2012, then contracted 15 percent by the summer. His team will periodically have to address imbalances in the money supply. For instance, they can curb inflation by introducing a new type of weapon, say, to absorb virtual currency.

{ Washington Post | Continue reading }

Labs like mine are now developing 3-D assemblers (rather than printers) that can build structures in the same way as the ribosome. The assemblers will be able to both add and remove parts from a discrete set. One of the assemblers we are developing works with components that are a bit bigger than amino acids, cluster of atoms about ten nanometers long (an amino acid is around one nanometer long). These can have properties that amino acids cannot, such as being good electrical conductors or magnets. The goal is to use the nanoassembler to build nanostructures, such as 3-D integrated circuits. Another assembler we are developing uses parts on the scale of microns to millimeters. We would like this machine to make the electronic circuit boards that the 3-D integrated circuits go on. Yet another assembler we are developing uses parts on the scale of centimeters, to make larger structures, such as aircraft components and even whole aircraft that will be lighter, stronger, and more capable than today’s planes — think a jumbo jet that can flap its wings.

A key difference between existing 3-D printers and these assemblers is that the assemblers will be able to create complete functional systems in a single process. They will be able to integrate fixed and moving mechanical structures, sensors and actuators, and electronics. Even more important is what the assemblers don’t create: trash. Trash is a concept that applies only to materials that don’t contain enough information to be reusable. All the matter on the forest floor is recycled again and again. Likewise, a product assembled from digital materials need not be thrown out when it becomes obsolete. It can simply be disassembled and the parts reconstructed into something new.

The most interesting thing that an assembler can assemble is itself. For now, they are being made out of the same kinds of components as are used in rapid prototyping machines. Eventually, however, the goal is for them to be able to make all their own parts.

{ Foreign Affairs | Continue reading }

{ The US Naval Surface Warfare Center has created an Android app that secretly records your environment and reconstructs it as a 3D virtual model for a malicious user to browse. | The Physics arXiv Blog }

Deisseroth is developing a remarkable way to switch brain cells off and on by exposing them to targeted green, yellow, or blue flashes. With that ability, he is learning how to regulate the flow of information in the brain.

Deisseroth’s technique, known broadly as optogenetics, could bring new hope to his most desperate patients. In a series of provocative experiments, he has already cured the symptoms of psychiatric disease in mice. Optogenetics also shows promise for defeating drug addiction. […]

For all its complexity, the brain in some ways is a surprisingly simple device. Neurons switch off and on, causing signals to stop or go. Using optogenetics, Deisseroth can do that switching himself. He inserts light-sensitive proteins into brain cells. Those proteins let him turn a set of cells on or off just by shining the right kind of laser beam at the cells.


That in turn makes it possible to highlight the exact neural pathways involved in the various forms of psychiatric disease. A disruption of one particular pathway, for instance, might cause anxiety.

{ Discover | Continue reading }

Google Chairman Eric Schmidt says Apple should have continued to use Google’s mapping application in iOS 6 instead of swapping it out for its poorly received home-brewed replacement, and given the sour reception Apple’s Maps app has been given, he may have been right.

But multiple sources familiar with Apple’s thinking say the company felt it had no choice but to replace Google Maps with its own, because of a disagreement over a key feature: Voice-guided turn-by-turn driving directions.

{ All Things D | Continue reading }

related { Ecce Homo }

Imagine a clock that will keep perfect time forever, even after the heat-death of the universe. This is the “wow” factor behind a device known as a “space-time crystal,” a four-dimensional crystal that has periodic structure in time as well as space. However, there are also practical and important scientific reasons for constructing a space-time crystal. With such a 4D crystal, scientists would have a new and more effective means by which to study how complex physical properties and behaviors emerge from the collective interactions of large numbers of individual particles, the so-called many-body problem of physics. A space-time crystal could also be used to study phenomena in the quantum world, such as entanglement, in which an action on one particle impacts another particle even if the two particles are separated by vast distances.

{ Berkeley Lab | Continue reading }

{ Behind every Google Map, there is a much more complex map that’s the key to your queries but hidden from your view. }

related { Apple Aggressively Recruiting Ex-Google Maps Staff To Build Out iOS Maps }

related { Apple once sued New York City (“the Big Apple”) over an apple-shaped logo. }

related { About 2,000 Chinese employees of an iPhone assembly company fought a pitched battle into the early hours of Monday, forcing the huge electronics plant where they work to be shut down. }

{ Look at all these iPhone 5s flooding FedEx’s distribution center }

The rise of social photography means that we are now seeing images all the time, millions of them, billions, many of which are manipulated with the same easy algorithms, the same tiresome vignetting, the same dank green wash. […]

All bad photos are alike, but each good photograph is good in its own way. The bad photos have found their apotheosis on social media, where everybody is a photographer and where we have to suffer through each other’s “photography” the way our forebears endured terrible recitations of poetry after dinner. Behind this dispiriting stream of empty images is what Russians call poshlost: fake emotion, unearned nostalgia. According to Nabokov, poshlost “is not only the obviously trashy but mainly the falsely important, the falsely beautiful, the falsely clever, the falsely attractive.”

{ Teju Cole | Continue reading }

photo { Nan Goldin }

{ BIOswimmer robofish will be able to search and inspect the hulls of ships, and even the ocean floor should drug dealers attempt to ditch their contraband overboard. }

Sweden’s successful waste-to-energy program converts household waste into energy for heating and electricity. But they’ve run into an unusual problem: they simply aren’t generating enough trash to power the incinerators, so they’ve begun importing waste from European neighbors. […]

Sweden has recently begun to import about eight hundred thousand tons of trash from the rest of Europe per year to use in its power plants. The majority of the imported waste comes from neighboring Norway because it’s more expensive to burn the trash there and cheaper for the Norwegians to simply export their waste to Sweden.

In the arrangement, Norway pays Sweden to take the waste off their hands and Sweden also gets electricity and heat. But dioxins in the ashes of the waste byproduct are a serious environmental pollutant. Ostlund explained that there are also heavy metals captured within the ash that need to be landfilled. Those ashes are then exported to Norway.

{ PRI | Continue reading }

{ How to get Google Maps on iOS 6 }

Detectives tracking murderers, rapists and other criminals may be able to reconstruct their faces from a speck of blood left at the crime scene.

The significant advance in forensic investigation has been brought a step closer by scientists who believe they can produce portraits of suspects from a scrap of their DNA. The development would mean inaccurate photofits and unreliable eyewitness testimony would be consigned to history.

Researchers in the Netherlands working with photographs of individuals and MRI scans of their heads have identified genetic factors that contribute to facial appearance. […] The researchers from the Erasmus University Medical Centre in Rotterdam identified nine facial “landmarks”, including the position of the cheekbones, the distance between the eyes, and the height, width and length of the nose. By analysing the genomes of almost 10,000 individuals, they found five genes that controlled the positioning of the nine landmarks which affected their facial appearance.

{ Independent | Continue reading }

related { ‘Psychopaths’ have an impaired sense of smell }

photo { Richard Barnes, Unabomber 01, 1998 }

{ Thanks Tim }

Can you determine a person’s character in a single interaction? Can you judge whether someone you just met can be trusted when you have only a few minutes together? And if you can, how do you do it?

Using a robot named Nexi, psychology professor David DeSteno and collaborators […] have figured out the answer. […]

In the absence of reliable information about a person’s reputation, nonverbal cues can offer a look into a person’s likely actions. This concept has been known for years, but the cues that convey trustworthiness or untrustworthiness have remained a mystery. Collecting data from face-to-face conversations with research participants where money was on the line, DeSteno and his team realized that it’s not one single non-verbal movement or cue that determines a person’s trustworthiness, but rather sets of cues.

{ EurekAlert | Continue reading }

photo { Garry Winogrand }