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Chloe Efforn

John Lennon Was a Crazy Cat Lady

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Chloe Efforn

John Lennon was crazy about cats, and though he owned a couple of dogs (Sally and Bernard) over the years, he was better known for getting by with a little help from his feline friends.

1. ELVIS

Growing up, Lennon's beloved mother, Julia, had a named cat after Elvis Presley, whom Julia and John were both crazy about. The Lennons later realized they had misnamed Elvis when "he" gave birth to a litter of kittens in the cupboard, but they didn't change the cat's name based on that small mistake.

2 & 3. TICH AND SAM

He had two other cats as a boy growing up in Liverpool: Tich and Sam. Tich passed away while Lennon was away at art school (which he attended from 1957 to 1960), and Sam was named after famous British diarist Samuel Pepys

4. TIM

One day, John Lennon found a stray cat in the snow, which his Aunt Mimi allowed him to keep. (John's Aunt Mimi raised him from a young boy through his late teenage years, and he affectionately referred to her as the Cat Woman.) He named the marmalade-colored half-Persian cat Tim.

Tim remained a special favorite of John's. Every day, he would hop on his Raleigh bicycle and ride to Mr. Smith's, the local fishmonger, where he would buy a few pieces of fish for Tim and his other cats. Even after John became famous as a Beatle, he would often call and check in on how Tim was doing. Tim lived a happy life and survived to celebrate his 20th birthday.

5 & 6. MIMI AND BABAGHI

John and his first wife, Cynthia, had a cat named Mimi who was, of course, named after his Aunt Mimi. They soon got another cat, a tabby who they dubbed Babaghi. John and Cynthia continued acquiring more cats, eventually owning around 10 of them.

7. JESUS

As a Beatle, John had a cat named Jesus. The name was most likely John's sarcastic response to his "the Beatles are bigger than Jesus" controversy of 1966. But he wasn't the only band member with a cat named Jesus: Paul McCartney once had a trio of kittens named Jesus, Mary, and Joseph.

8 & 9. MAJOR AND MINOR

In the mid-1970s, John had an affair with his secretary, May Pang. One day, the studio receptionist brought a box of kittens into the recording studio where John and May were. "No," John immediately told May, "we can't, we're traveling too much." But she picked up one of the kittens and put it over her shoulder. Then John started stroking the kitten and decided to keep it. At the end of the day, the only other kitten left was a little white one that was so loud no one else wanted it. So they adopted it as well and named the pair Major and Minor.

10 & 11. SALT AND PEPPER

John owned a pair of black and white cats with his wife Yoko Ono. As befitting John's offbeat sense of humor, many places report he christened the white cat Pepper and the black one Salt.

12 & 13. GERTRUDE AND ALICE

John and Yoko also had two Russian Blue cats named Gertrude and Alice, who each met tragic ends. After a series of sicknesses, Gertrude was diagnosed with a virus that could become dangerous to their young son, Sean. John later said that he held Gertrude and wept as she was euthanized. 

Later, Alice jumped out of an open window in the Lennons' high-rise apartment at the Dakota and plunged to her death. Sean was present at the time of the accident, and he remembers it as the only time he ever saw his father cry.

14, 15 & 16. MISHA, SASHA, AND CHARO

In later years, John also owned three cats he named Misha, Sasha, and Charo. Always an artist at heart, John loved to sketch his many cats, and he used some of these pictures as illustrations in his books.

This piece originally ran in 2012.

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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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Name the Author Based on the Character
May 23, 2017
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