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London Fire Brigade

The Weird Week in Review

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London Fire Brigade

Crystal Ball Failed to Predict Bedroom Fire

A bedroom fire in northeast London, England, was started when sunlight was concentrated through a crystal ball on the windowsill. An unnamed man was asleep in the bedroom when a smoke alarm woke him, enabling him to escape. The man and a woman tried to extinguish the flames with a garden hose and towels, but then fled the home and called the fire department. Firefighters spent an hour putting out the blaze. Fire investigator Mick Boyle said glass ornaments, bottles, and mirrors should never be kept in sunny windows.

Man Eats Nothing But Pizza For 25 Years

Dan Janssen is 38 years old, and he hasn’t eaten anything besides pizza in the past 25 years. While monotonous, that doesn’t necessarily sound too unhealthy, because you can put anything on a pizza: meats, vegetables, even fruit and seafood. But Janssen only eats cheese pizza!

Janssen wasn’t always on the pizza-only diet, though. It all began when, as a teenager, he decided to become a vegetarian for ethical reasons. But he hated vegetables, so he just decided to start surviving on pizza alone. He says he knows he must sound “like a horribly unhealthy and fat person” but he says he’s in fact thin, has tons of energy and feels great every day.

However, Janssen does have diabetes. He says he gets variety in his diet by eating different brands of pizza, or going to different restaurants. Janssen is not so much a vegetarian as he is just a “tarian.” Where I come from, that diet is called “picky eating.”

Snake Pickled in Liquor Bites Woman

An unidentified woman in Harbin, China, decided to make some snake liquor to help her arthritis. The medicinal liquor is made by adding a venomous snake to alcohol such as baijiu, and letting it steep so that the essence of the snake infuses the liquor. The woman had been dispensing the liquor from a spigot at the bottom of the container. When the alcohol level got low, three months after adding the viper, she opened the top of the container to add more baijiu, and the snake bit her! The woman was treated for the bite on her finger. The snake had apparently gone into hibernation and woke up not only trapped and angry, but also drunk. Maybe next time she will make snake liquor with a dead snake, as the recipe calls for.

Guy Wearing Breaking Bad Shirt Busted for Meth Lab

Acting on a tip, Cook County Sheriff’s officers arrested 21-year-old Daniel Kowalski at his home near Lagrange, Illinois, on several charges related to running a meth lab. In addition to meth and manufacturing equipment, police also found twelve jars of psychedelic mushrooms in the home. It was Kowalski’s second arrest for meth charges, and he was still wearing an electronic monitoring device from the earlier arrest when he was picked up Monday.

Kowalski was ordered to home confinement after his arrest last July, according to sheriff’s spokeswoman Sophia Ansari.

In the mug shot after his most recent arrest, Kowalski is wearing a T-shirt bearing the words "Los Pollos Hermanos," the name of a restaurant used as a front by a meth dealer in the TV series “Breaking Bad.’’

Kowalski’s mugshot has since gone viral because of the appropriate t-shirt.

6,000 Gallons of Spilled Milk

If that isn’t something to cry about, I don’t know what is. A tanker truck carrying 6,000 gallons of milk crashed into the front of a house in Hunker, Pennsylvania, on Thursday afternoon. Two people were inside the home near the point of impact, but were not injured. The truck driver sustained only minor injuries. The house was badly damaged, and the entire load of milk was spilled into the front yard. Authorities say they will contact the Environmental Protection Agency about the milk spill.

Two Dogs Take Truck on Joyride

A pickup truck came very close to plunging into the Arkansas River in Tulsa, Oklahoma on Tuesday. The truck, belonging to a man identified only as Scott, was parked on a hill. While Scott was inside a house, his two dogs Luna and Roscoe were left in the truck.

"I got around to the front of the house where the truck was, and it's like not there," he said. "And I was like 'did I get towed?' and I just thought no it didn't."

One of the dogs put the car into gear and they took off.

"Approximately three blocks down a hill," Tulsa firefighter Clay Ayers said.

The dogs missed drivers on Riverside Drive, runners on the trail and narrowly missed landing in the Arkansas River.

The truck was stopped by the brush along the river. The vehicle was badly damaged. Roscoe and Luna were uninjured, and were let go with a warning.

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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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!

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Library of Congress
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10 Facts About the Tomb of the Unknown Soldier
May 29, 2017
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Library of Congress

On Veterans Day, 1921, President Warren G. Harding presided over an interment ceremony at Arlington National Cemetery for an unknown soldier who died during World War I. Since then, three more soldiers have been added to the Tomb of the Unknowns (also known as the Tomb of the Unknown Soldier) memorial—and one has been disinterred. Below, a few things you might not know about the historic site and the rituals that surround it.

1. THERE WERE FOUR UNKNOWN SOLDIER CANDIDATES FOR THE WWI CRYPT. 

Wikimedia Commons // Public Domain

To ensure a truly random selection, four unknown soldiers were exhumed from four different WWI American cemeteries in France. U.S. Army Sgt. Edward F. Younger, who was wounded in combat and received the Distinguished Service Medal, was chosen to select a soldier for burial at the Tomb of the Unknowns in Arlington. After the four identical caskets were lined up for his inspection, Younger chose the third casket from the left by placing a spray of white roses on it. The chosen soldier was transported to the U.S. on the USS Olympia, while the other three were reburied at Meuse Argonne American Cemetery in France.

2. SIMILARLY, TWO UNKNOWN SOLDIERS WERE SELECTED AS POTENTIAL REPRESENTATIVES OF WWII.

One had served in the European Theater and the other served in the Pacific Theater. The Navy’s only active-duty Medal of Honor recipient, Hospitalman 1st Class William R. Charette, chose one of the identical caskets to go on to Arlington. The other was given a burial at sea.

3. THERE WERE FOUR POTENTIAL KOREAN WAR REPRESENTATIVES.

WikimediaCommons // Public Domain

The soldiers were disinterred from the National Cemetery of the Pacific in Hawaii. This time, Army Master Sgt. Ned Lyle was the one to choose the casket. Along with the unknown soldier from WWII, the unknown Korean War soldier lay in the Capitol Rotunda from May 28 to May 30, 1958.

4. THE VIETNAM WAR UNKNOWN WAS SELECTED ON MAY 17, 1984.

Medal of Honor recipient U.S. Marine Corps Sgt. Maj. Allan Jay Kellogg, Jr., selected the Vietnam War representative during a ceremony at Pearl Harbor.

5. BUT THE VIETNAM VETERAN WASN'T UNKNOWN FOR LONG.

Wikipedia // Public Domain

Thanks to advances in mitochondrial DNA testing, scientists were eventually able to identify the remains of the Vietnam War soldier. On May 14, 1998, the remains were exhumed and tested, revealing the “unknown” soldier to be Air Force 1st Lt. Michael Joseph Blassie (pictured). Blassie was shot down near An Loc, Vietnam, in 1972. After his identification, Blassie’s family had him moved to Jefferson Barracks National Cemetery in St. Louis. Instead of adding another unknown soldier to the Vietnam War crypt, the crypt cover has been replaced with one bearing the inscription, “Honoring and Keeping Faith with America’s Missing Servicemen, 1958-1975.”

6. THE MARBLE SCULPTORS ARE RESPONSIBLE FOR MANY OTHER U.S. MONUMENTS. 

The Tomb was designed by architect Lorimer Rich and sculptor Thomas Hudson Jones, but the actual carving was done by the Piccirilli Brothers. Even if you don’t know them, you know their work: The brothers carved the 19-foot statue of Abraham Lincoln for the Lincoln Memorial, the lions outside of the New York Public Library, the Maine Monument in Central Park, the DuPont Circle Fountain in D.C., and much more.

7. THE TOMB HAS BEEN GUARDED 24/7 SINCE 1937. 

Tomb Guards come from the 3rd U.S. Infantry Regiment "The Old Guard". Serving the U.S. since 1784, the Old Guard is the oldest active infantry unit in the military. They keep watch over the memorial every minute of every day, including when the cemetery is closed and in inclement weather.

8. BECOMING A TOMB GUARD IS INCREDIBLY DIFFICULT.

Members of the Old Guard must apply for the position. If chosen, the applicant goes through an intense training period, in which they must pass tests on weapons, ceremonial steps, cadence, military bearing, uniform preparation, and orders. Although military members are known for their neat uniforms, it’s said that the Tomb Guards have the highest standards of them all. A knowledge test quizzes applicants on their memorization—including punctuation—of 35 pages on the history of the Tomb. Once they’re selected, Guards “walk the mat” in front of the Tomb for anywhere from 30 minutes to two hours, depending on the time of year and time of day. They work in 24-hour shifts, however, and when they aren’t walking the mat, they’re in the living quarters beneath it. This gives the sentinels time to complete training and prepare their uniforms, which can take up to eight hours.

9. THE HONOR IS ALSO INCREDIBLY RARE.

The Tomb Guard badge is the least awarded badge in the Army, and the second least awarded badge in the overall military. (The first is the astronaut badge.) Tomb Guards are held to the highest standards of behavior, and can have their badge taken away for any action on or off duty that could bring disrespect to the Tomb. And that’s for the entire lifetime of the Tomb Guard, even well after his or her guarding duty is over. For the record, it seems that Tomb Guards are rarely female—only three women have held the post.

10. THE STEPS THE GUARDS PERFORM HAVE SPECIFIC MEANING.

Everything the guards do is a series of 21, which alludes to the 21-gun salute. According to TombGuard.org:

The Sentinel does not execute an about face, rather they stop on the 21st step, then turn and face the Tomb for 21 seconds. They then turn to face back down the mat, change the weapon to the outside shoulder, mentally count off 21 seconds, then step off for another 21 step walk down the mat. They face the Tomb at each end of the 21 step walk for 21 seconds. The Sentinel then repeats this over and over until the Guard Change ceremony begins.

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