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5 Famous Nerdfighters

Since launching their first YouTube channel on January 1, 2007, vloggers John and Hank Green have amassed one of the Web’s most passionate fanbases. Affectionately known as “Nerdfighters,” these followers have grown into a thriving community both on and off-line, drawn together by a love of knowledge, a desire to spread goodwill, and an adherence to their hallowed mantra “Don’t Forget to be Awesome!”

And if humanitarianism is any measure of awesomeness, they’re in no danger of forsaking this noble pledge. Under the leadership of the Foundation to Decrease World Suck (managed in part by the Greens themselves), Nerdfighters have helped raise millions for various charities in an annual philanthropy drive dubbed the “Project for Awesome” (P4A).

The movement’s also recruited more than a few celebrities into its ranks, such as athletes, scientists, and statesmen. Here are five of the planet’s most famous Nerdfighters.

1. Wil Wheaton

When he’s not busy tormenting Sheldon Cooper on The Big Bang Theory, Wheaton’s been known to give Nerdfighteria some well-deserved shout-outs. The Star Trek veteran even chose to recite John’s ode to nerdiness at the 2011 Penny Arcade Expo, as you can see in this clip.

2. Jennifer Pinches

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Pinches performed on behalf of her native Great Britain during 2012 Summer Olympics’ women’s artistic gymnastics finals, helping the squad claim its best placement in 80 years. How did she celebrate afterwards? By flashing the Nerdfighter salute on international television. “I got quite a lot of followers on Twitter because of it,” Pinches said, “and people were confused as to what it meant. What was it … a scary gang sign or something?”

A Vlogbrothers fan, Pinches did her part to decrease World Suck that autumn when she retired from gymnastics to pursue, among other things, volunteer work in Ecuador. In her own words, the V-shaped gesture signifies “Being … part of a community, being happy, and yeah, don’t forget to be awesome.”  

3. Charlie McDonnell

With a palpable fondness for science, music, and Doctor Who, McDonnell’s one of the internet’s most successful video bloggers. Charity is a subject about which McDonnell is equally passionate, and the star has graciously lent his celebrity to a number of disease research and anti-poverty efforts around the world, some in conjunction with the P4A. Be sure to check out his epic interview with Hank Green here.

4. Neil DeGrasse Tyson

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“Not only do we live among the stars, the stars live within us," Tyson once said with typical eloquence. And just when you thought the infinitely-quotable astrophysicist couldn’t get any cooler, it turns out he’s also a Nerdfighter to boot, having proudly described himself as “a fan of the cause.”

5. Barack Obama

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The President did his best to court the coveted Nerdfighter vote last February during a Google-sponsored fireside hangout. Towards the end of the live-streaming event, John and his wife Sarah “The Yeti” Green announced that they were expecting a second child and asked the commander-in-chief to state his preference between the names Alice and Eleanor. Obama politely declined, but brought down the house when he added, “tell either Eleanor or Alice not to forget to be awesome.”

When baby Alice was born four months later, John tweeted the President to let him know he’d done just that. 

Original image
iStock // Ekaterina Minaeva
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technology
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
Original image
iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

Original image
Cs California, Wikimedia Commons // CC BY-SA 3.0
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science
How Experts Say We Should Stop a 'Zombie' Infection: Kill It With Fire
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Cs California, Wikimedia Commons // CC BY-SA 3.0

Scientists are known for being pretty cautious people. But sometimes, even the most careful of us need to burn some things to the ground. Immunologists have proposed a plan to burn large swaths of parkland in an attempt to wipe out disease, as The New York Times reports. They described the problem in the journal Microbiology and Molecular Biology Reviews.

Chronic wasting disease (CWD) is a gruesome infection that’s been destroying deer and elk herds across North America. Like bovine spongiform encephalopathy (BSE, better known as mad cow disease) and Creutzfeldt-Jakob disease, CWD is caused by damaged, contagious little proteins called prions. Although it's been half a century since CWD was first discovered, scientists are still scratching their heads about how it works, how it spreads, and if, like BSE, it could someday infect humans.

Paper co-author Mark Zabel, of the Prion Research Center at Colorado State University, says animals with CWD fade away slowly at first, losing weight and starting to act kind of spacey. But "they’re not hard to pick out at the end stage," he told The New York Times. "They have a vacant stare, they have a stumbling gait, their heads are drooping, their ears are down, you can see thick saliva dripping from their mouths. It’s like a true zombie disease."

CWD has already been spotted in 24 U.S. states. Some herds are already 50 percent infected, and that number is only growing.

Prion illnesses often travel from one infected individual to another, but CWD’s expansion was so rapid that scientists began to suspect it had more than one way of finding new animals to attack.

Sure enough, it did. As it turns out, the CWD prion doesn’t go down with its host-animal ship. Infected animals shed the prion in their urine, feces, and drool. Long after the sick deer has died, others can still contract CWD from the leaves they eat and the grass in which they stand.

As if that’s not bad enough, CWD has another trick up its sleeve: spontaneous generation. That is, it doesn’t take much damage to twist a healthy prion into a zombifying pathogen. The illness just pops up.

There are some treatments, including immersing infected tissue in an ozone bath. But that won't help when the problem is literally smeared across the landscape. "You cannot treat half of the continental United States with ozone," Zabel said.

And so, to combat this many-pronged assault on our wildlife, Zabel and his colleagues are getting aggressive. They recommend a controlled burn of infected areas of national parks in Colorado and Arkansas—a pilot study to determine if fire will be enough.

"If you eliminate the plants that have prions on the surface, that would be a huge step forward," he said. "I really don’t think it’s that crazy."

[h/t The New York Times]

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