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Dietribes: Cabbage

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• Cabbages are derived from the wild mustard plant of the Mediterranean region, and have been popular since ancient times. Cato the Elder praised the cabbage for its many medicinal uses.

• Cabbages are highly nutritious, containing large amounts of Vitamin C, folate and fiber. That and its low calorie count is why some people use cabbage on weight-loss diets.

• However, the cabbage is also known to have a certain undesirable gastric side effect. As Nicholas Culpeper said in A Complete Herbal (1653) "Cabbages are extremely windy, whether you take them as meat or as medicine, as windy meat as can be eaten, unless you eat bag-pipes or bellows."

• Remember "freedom fries"? That wasn't the first time the name of one of our foods has been attempted to be changed because of political fervor. During World War I, Americans renamed sauerkraut "liberty cabbage."

• No one knows exactly how the Cabbagetown neighborhood in Atlanta got its name, though stories include the idea that the original poor Scotch-Irish residents (workers at the nearby cotton mill) would grow cabbages in their front yards, and that the smell of cooked cabbage was a nuisance (and later a point of pride). Other apocryphal suggestions include a train derailing or a Model T car overturning and spilling cabbages everywhere for people to snatch up, shouting "Free Cabbages!"

• Georgia has another cabbage connection - Cabbage Patch Kids, which were originally called Little People. In the late 1970s, art student Xavier Roberts started creating "soft sculptures," which he later expanded on by giving them birth certificates and allowing "adoptions." In 1982 the name changed to Cabbage Patch. By the mid-80s, the dolls went on record as having the most successful and in-demand introduction of a toy ever.

• Though cabbages have often been thought of throughout history as a cheap food, that's certainly not true in Northern Canada, where a cabbage can cost $28. The northern Canadian territory of Nunavut is so remote that anything not a product of hunting and gathering must be flown in.

• By the way, that corned beef and cabbage you cook up for St. Patricks Day? Not actually Irish. Though corned beef was made in Ireland in the 17th and 18th centuries, most Irish families were too poor to eat it. Instead it went to British citizens as well as the British and U.S. military. These days, the Irish reportedly find the dish just plain boring.

• Cabbages can have a killer instinct - genetically modified cabbages can produce scorpion poison that kills caterpillars when they bite leaves. But don't worry, the toxin is modified so it isn’t harmful to humans. (I like that the title of the article is "Venomous Cabbage"!)

• Another way to get rid of pests in your cabbage? Er, human urine. According to a 2007 study, "Our results show that human urine could be used as a fertilizer for cabbage and does not pose any significant hygienic threats or leave any distinctive flavor in food products." Good to know?

• The largest cabbage on record was called "The Beast" and weighed 127 pounds. Reportedly it wasn't actually particularly tasty, so it ended up as compost rather than on anyone's plate.

• How do you like to eat your cabbages, Flossers? And have you found a way to counteract their less-desirable side-effects?

Hungry for more? Venture into the Dietribes archive.

‘Dietribes’ appears every other Wednesday. Food photos taken by Johanna Beyenbach. You might remember that name from our post about her colorful diet.

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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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Nick Briggs/Comic Relief
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What Happened to Jamie and Aurelia From Love Actually?
May 26, 2017
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Nick Briggs/Comic Relief

Fans of the romantic-comedy Love Actually recently got a bonus reunion in the form of Red Nose Day Actually, a short charity special that gave audiences a peek at where their favorite characters ended up almost 15 years later.

One of the most improbable pairings from the original film was between Jamie (Colin Firth) and Aurelia (Lúcia Moniz), who fell in love despite almost no shared vocabulary. Jamie is English, and Aurelia is Portuguese, and they know just enough of each other’s native tongues for Jamie to propose and Aurelia to accept.

A decade and a half on, they have both improved their knowledge of each other’s languages—if not perfectly, in Jamie’s case. But apparently, their love is much stronger than his grasp on Portuguese grammar, because they’ve got three bilingual kids and another on the way. (And still enjoy having important romantic moments in the car.)

In 2015, Love Actually script editor Emma Freud revealed via Twitter what happened between Karen and Harry (Emma Thompson and Alan Rickman, who passed away last year). Most of the other couples get happy endings in the short—even if Hugh Grant's character hasn't gotten any better at dancing.

[h/t TV Guide]

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