CLOSE
Original image

The Adventures of St. Patrick

Original image

Slave, traveler, evangelist, abolitionist, and saint. A scant 400 years after Jesus' birth, the priest known as Patrick took the Great Commission seriously, to spread the gospel to the ends of the earth by converting the frightening barbarians of that scary outpost known as Ireland. Dates and details of Patrick's life are somewhat ambiguous since written records from fifth-century Ireland are scarce. A lot of what we know comes from what little Patrick himself wrote, or from biographies written long after his time.
*
Saint Patrick was born Maewyn Succat in Britain (different sources say England, Scotland, or Wales) to Roman parents around AD 387. In his later ministry, he went by the name Patricius Daorbae which means Patrick who was once a slave.
*
When he was around 16 years old, Patrick was kidnapped by Irish marauders who sold him into slavery to a Druid herdsman named Milchu. Patrick remained in Ireland for six years. During this time, Patrick learned the Celtic language and became acquainted with the practices of the Druids. He later wrote that he became close to God during this time and prayed every night for his deliverance. He ran away after hearing direction from an angel and walked 200 miles to catch a boat back to Britain. Afterward, Patrick was sent to France to begin his training for the priesthood despite the long break in his formal education. When he achieved priesthood, Patrick was assigned to Britain, but his dream was to return to Ireland to convert the pagans. His teachers recommended him to Pope Celestine I for a mission to Ireland. While Patrick was not the first Catholic bishop assigned to Ireland, he was the first who set a goal of converting the entire country. His predecessor Palladius was mainly concerned with ministering to the existing Irish Christian minority in the south and protecting them from the influence of the Druids. Celestine sent Patrick to Ireland in 428. Or 432.

200_St_Patrick4.jpgPatrick's first quest in Ireland was to see the slave owner of his youth, the Druid Milchu, not to seek revenge, but to convert him. Milchu heard the news of the priest's arrival in Ireland, and he committed suicide by burning himself, his home, and his treasures before Patrick arrived. Sources of this story vary, with some saying Milchu killed himself out of fear that Patrick was seeking revenge. Others say Milchu was a proud Druid who preferred death to listening to the foreign gospel. In any case, Patrick was devastated.
*
Patrick's first church was in what is now County Down. He converted a Druid chieftain named Dichu who granted him a barn on a hill, or Sabhail (pronounced Saul), where Patrick founded a church.
*
The priest traveled from coast to coast in Ireland, visiting kings and chieftains, speaking their language and evangelizing. He confronted Druids and performed miracles by resisting their powers and escaping the several times he was taken prisoner. Patrick converted leaders and slaves alike, and founded churches in many corners of Ireland. One Easter, Patrick and his followers started a fire early in the morning near Tara. The local law forbade anyone starting a fire before the king did, so King Laoghaire and his Druid priest faced off with Patrick, who did not back down but told those present of his powerful God. As the story goes, a Druid magician challenged Patrick to a trial by fire, which led to the magician's death.

445armagh.jpg

Patrick was especially proud of bringing Christianity to Ulster in the northern part of Ireland, and founded the Cathedral of Armagh that still stands on a hill he selected. Image by Brian Shaw.

200_st.patrick.jpgOdhran, St. Patrick's charioteer, became a martyr by saving the bishop's life. Odhran heard a rumor of an assassination, and persuaded Patrick to change jobs with him on the appointed day as a special favor. Unaware of the threat, Patrick granted his wish, and Odhran was attacked and killed.
*
Patrick was the first person in the history of the world to publicly denounce the institution of slavery. Slaves had no voice, those in power owned slaves, and the church didn't condemn slavery for another thousand years. Patrick, however, had been there, done that, and his identification with the downtrodden helped him convert those who were ignored by the powers that be. He was also an early feminist, actively evangelizing women in an age when many missionaries discounted or feared them. His activities in this area may have led to some trouble with the Catholic church, which led to Patrick writing his extensive Confessio.

445croaghpatrick.jpg

Croagh Patrick, or St. Patrick's Mountain, was his refuge and purgatory. It was on this hill that Patrick fasted and prayed for 40 days straight for the people of Ireland. He pleaded to God for special treatment for the Irish on judgment day. The hill became a pilgrimage site, and gold was discovered there in the 1980s, but is not mined. Image by Flickr user bettlebrox.

Later in life, Patrick retired to his first church, Saul. He wished to die at Armaugh, but a vision told him to stop his journey and return to Saul and remain there. St. Patrick died in 463 or 491 or some year on March 17th, which became his feast day, as is the custom for saints, although St. Patrick was never officially canonized by the Vatican.

Original image
iStock // Ekaterina Minaeva
technology
arrow
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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
iStock
Sponsor Content: BarkBox
arrow
8 Common Dog Behaviors, Decoded
May 25, 2017
Original image
iStock

Dogs are a lot more complicated than we give them credit for. As a result, sometimes things get lost in translation. We’ve yet to invent a dog-to-English translator, but there are certain behaviors you can learn to read in order to better understand what your dog is trying to tell you. The more tuned-in you are to your dog’s emotions, the better you’ll be able to respond—whether that means giving her some space or welcoming a wet, slobbery kiss. 

1. What you’ll see: Your dog is standing with his legs and body relaxed and tail low. His ears are up, but not pointed forward. His mouth is slightly open, he’s panting lightly, and his tongue is loose. His eyes? Soft or maybe slightly squinty from getting his smile on.

What it means: “Hey there, friend!” Your pup is in a calm, relaxed state. He’s open to mingling, which means you can feel comfortable letting friends say hi.

2. What you’ll see: Your dog is standing with her body leaning forward. Her ears are erect and angled forward—or have at least perked up if they’re floppy—and her mouth is closed. Her tail might be sticking out horizontally or sticking straight up and wagging slightly.

What it means: “Hark! Who goes there?!” Something caught your pup’s attention and now she’s on high alert, trying to discern whether or not the person, animal, or situation is a threat. She’ll likely stay on guard until she feels safe or becomes distracted.

3. What you’ll see: Your dog is standing, leaning slightly forward. His body and legs are tense, and his hackles—those hairs along his back and neck—are raised. His tail is stiff and twitching, not swooping playfully. His mouth is open, teeth are exposed, and he may be snarling, snapping, or barking excessively.

What it means: “Don’t mess with me!” This dog is asserting his social dominance and letting others know that he might attack if they don’t defer accordingly. A dog in this stance could be either offensively aggressive or defensively aggressive. If you encounter a dog in this state, play it safe and back away slowly without making eye contact.

4. What you’ll see: As another dog approaches, your dog lies down on his back with his tail tucked in between his legs. His paws are tucked in too, his ears are flat, and he isn’t making direct eye contact with the other dog standing over him.

What it means: “I come in peace!” Your pooch is displaying signs of submission to a more dominant dog, conveying total surrender to avoid physical confrontation. Other, less obvious, signs of submission include ears that are flattened back against the head, an avoidance of eye contact, a tongue flick, and bared teeth. Yup—a dog might bare his teeth while still being submissive, but they’ll likely be clenched together, the lips opened horizontally rather than curled up to show the front canines. A submissive dog will also slink backward or inward rather than forward, which would indicate more aggressive behavior.

5. What you’ll see: Your dog is crouching with her back hunched, tail tucked, and the corner of her mouth pulled back with lips slightly curled. Her shoulders, or hackles, are raised and her ears are flattened. She’s avoiding eye contact.

What it means: “I’m scared, but will fight you if I have to.” This dog’s fight or flight instincts have been activated. It’s best to keep your distance from a dog in this emotional state because she could attack if she feels cornered.

6. What you’ll see: You’re staring at your dog, holding eye contact. Your dog looks away from you, tentatively looks back, then looks away again. After some time, he licks his chops and yawns.

What it means: “I don’t know what’s going on and it’s weirding me out.” Your dog doesn’t know what to make of the situation, but rather than nipping or barking, he’ll stick to behaviors he knows are OK, like yawning, licking his chops, or shaking as if he’s wet. You’ll want to intervene by removing whatever it is causing him discomfort—such as an overly grabby child—and giving him some space to relax.

7. What you’ll see: Your dog has her front paws bent and lowered onto the ground with her rear in the air. Her body is relaxed, loose, and wiggly, and her tail is up and wagging from side to side. She might also let out a high-pitched or impatient bark.

What it means: “What’s the hold up? Let’s play!” This classic stance, known to dog trainers and behaviorists as “the play bow,” is a sign she’s ready to let the good times roll. Get ready for a round of fetch or tug of war, or for a good long outing at the dog park.

8. What you’ll see: You’ve just gotten home from work and your dog rushes over. He can’t stop wiggling his backside, and he may even lower himself into a giant stretch, like he’s doing yoga.

What it means: “OhmygoshImsohappytoseeyou I love you so much you’re my best friend foreverandeverandever!!!!” This one’s easy: Your pup is overjoyed his BFF is back. That big stretch is something dogs don’t pull out for just anyone; they save that for the people they truly love. Show him you feel the same way with a good belly rub and a handful of his favorite treats.

The best way to say “I love you” in dog? A monthly subscription to BarkBox. Your favorite pup will get a package filled with treats, toys, and other good stuff (and in return, you’ll probably get lots of sloppy kisses). Visit BarkBox to learn more.

SECTIONS
BIG QUESTIONS
BIG QUESTIONS
WEATHER WATCH
BE THE CHANGE
JOB SECRETS
QUIZZES
WORLD WAR 1
SMART SHOPPING
STONES, BONES, & WRECKS
#TBT
THE PRESIDENTS
WORDS
RETROBITUARIES