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In certain dialects of Chinese, Japanese, Korean, and Vietnamese, the word for ‘four’ sounds very similar to the word for ‘death’1. Consequently, the number 4 is considered by many people in East Asian nations to be unlucky. It is not unusual for buildings in that region to skip the number 4 when labeling floors, much in the same way 13th floors are omitted in some parts of the world2. In Hong Kong, at least one skyscraper avoids the proper numbering for floors 40-49. Four is the smallest positive non-prime number3. It is the only natural number where one can get the same result by multiplying its square roots (2×2), or adding them (2+2). Four happens to be the only number that has the same number of letters as its actual value4. The four color theorem tells us that four is an adequate number of colors for any two dimensional map–no two bordering regions would need to share a color. Four is the number of bonds that a carbon atom can make, which is why life can exist, a quality known as tetravalency. Fear of the number four is known as tetraphobia, and anyone suffering from it has almost certainly stopped reading by now, or at least uttered some four-letter words. It’s no secret that direct donations to Damn Interesting have been on a downward trend in recent years, so we are aiming to diversify. To that end, we’ve made something new, and it’s called Omiword. Continue reading ▶
Edmund Lawall must have felt cursed. He’d brought his family to New York in the late 1800s to carry on his father’s business as a pharmacist, but fate—or perhaps the city itself—seemed determined to drive him back out again. Lawall’s health had been in decline since their arrival, and his wife’s kidney disease had worsened, despite all of the tinctures and patent medicines available to his turn-of-the-century expertise. Not long after that, his business partner had been revealed as a crook, sending Lawall scrambling into bankruptcy court to convince the judge that his pharmacy had nothing to do with shady real estate dealings. Then, in the midst of the bankruptcy proceedings, an anonymous woman had staggered into Lawall’s drug store, collapsed on the floor, and died of unknown causes. Likely no one could have saved her, but it wasn’t exactly a ringing endorsement of the pharmaceutical services available at the corner of Eighth Street and Avenue C. None of that compared, however, to the morning of 27 June 1906, when a disheveled man in a medical coat burst through the narrow glass doors of the pharmacy, begging for protection. He was immediately followed by a young man with a revolver, and an angry crowd screaming in Yiddish. Lawall didn’t speak the language, but there was no mistaking the young man’s intent as he strode purposely forward and raised his gun to the doctor’s head. It was a grim, but recognizable tableau: the young man’s stance and grip were confident, clearly marking him as a budding gangster. The behavior of the crowd, on the other hand, made no sense at all. Innocent bystanders tended to run away from gang violence, yet the pushcart vendors and housewives surrounding the apparent holdup were not frightened, or even appealing for mercy. They were shouting, quite insistently, for the doctor’s execution. And everything seemed to indicate they were going to get what they wanted. In the weeks that followed, blame would be pointed in nearly every direction—because at that moment, unbeknownst to Lawall, similar scenes were playing out all over the neighborhood, with other doctors, teachers, reporters, and even utility workers being assaulted by hordes of people howling at them in Yiddish. By the time it was over, the incident would be measured as one of the largest riots ever in New York City, and the confrontation at Lawall’s Pharmacy would be mentioned only in passing, if at all. Another name, however, would be repeated over and over again: Adeline E. Simpson, the principal of Public School No. 110. Continue reading ▶
Iceland is known to the rest of the world as the land of Vikings and volcanos, an island caught between continents at the extremities of the map. Remote and comparatively inhospitable, it was settled only as long ago as the 9th century, and has seen little additional in-migration since. Even today, more than 90 percent of Iceland’s 390,000 residents can trace their ancestry back to the earliest permanent inhabitants, a Nordic-Celtic mix. The tradition of the Norse sagas lives on in the form of careful record-keeping about ancestry—and a national passion for genealogy. In other words, it is not the place to stumble upon old family mysteries. But growing up in the capital city of Reykjavík in the 1950s, neurologist Dr. Kári Stefánsson heard stories that left him curious. Stefánsson’s father had come from Djúpivogur, an eastern coastal town where everyone still spoke of a Black man who had moved there early in the 19th century. “Hans Jónatan”, they called him—a well-liked shopkeeper who had arrived on a ship, married a spirited woman from a local farm, and became a revered member of the community. The local census did record a man by the name of Hans Jónatan, born in the Caribbean, who was working at the general store in Djúpivogur in the 19th century—but that was all. No images of the man had survived, and his time in Iceland was well before any other humans with African ancestry are known to have visited the island. If tiny, remote Djúpivogur did have a Black man arrive in the 19th century, the circumstances must have been unusual indeed. It was an intriguing puzzle—and solid grounds for a scientific investigation. Given the amount of homogeneity in the baseline Icelandic population, the genetic signature of one relative newcomer with distinct ancestry might still stand out across a large sample of his descendants. Geneticists thus joined locals and history scholars, and they pieced together a story that bridged three continents. Continue reading ▶
It’s been a busy summer, and the large shortfall in donations last month has been demoralizing, so we’re taking a week off to rest and recuperate. The curated links section will be (mostly) silent, and behind the scenes we’ll be taking a brief break from our usual researching, writing, editing, illustrating, narrating, sound designing, coding, et cetera. We plan to return to normalcy on the 11th of September. (The word “normalcy” was not considered an acceptable alternative to “normality” until 14 May 1920, when then-presidential-candidate Warren G. Harding misused the mathematical term in a campaign speech, stating that America needed, “not nostrums, but normalcy.” He then integrated this error into his campaign slogan, “Return to Normalcy.” Also, the G in Warren G. Harding stood for “Gamaliel.”) While we are away, on 06 September 2023, Damn Interesting will be turning 18 years old. To celebrate, here are the first emojis to ever appear in the body of a Damn Interesting post: 🎂🎉🎁 If you become bored while we are away, you might try a little mobile game we’ve been working on called Wordwhile. It can be played alone, or with a friend. If you enjoy games like Scrabble and Wordle, you may find this one ENJOYABLE (75 points). Launch Wordwhile → And, as always, there are lots of ways to explore our back-catalog. View this post ▶
We’re not going to post things on Twitter X anymore. The new owner keeps doing awful stuff. If you have enjoyed our mostly-daily curated links via the aforementioned collapsing service, we invite you to bookmark our curated links page, or follow us a number of other ways. Rather than linger any longer on this tedious topic, here are some home-grown dad jokes. If there is any order in this universe, the comments section will fill with more of the same. Q: What is the flavor of a chair? Do you even know the meaning of the word ‘rhetorical?’ Don’t answer that! My friend bought an alarm clock that makes loud farting sounds in the morning. He’s in for a rude awakening. You’re right, these ARE my orthopedic shoes. I stand corrected. I want a good game of hide and seek, but skilled players are hard to find. Like tight sweaters, corporate acquisitions are hard to pull off. I was offered a job at the mirror factory. I could see myself working there. Did you hear about the farmer in Colorado raising cannabis-fed cattle? The steaks are high. Q: What is the best stocking stuffer? I used to be addicted to soap, but I’ve gotten clean. I finally worked up the courage to tell my hot female coworker how I felt. She felt the same. So we turned down the thermostat. The universal remote: This changes everything. Q: How fast are donkey trucks? It smells like death in there, and not in a good way. My dad demanded that I go fetch some water from that deep hole in the ground. He means well. Calendar makers: Your days are numbered. A: I enjoy cooking with ghee, but I don’t buy it, I make my own. I will not rest until I find a cure for my insomnia. I bought my wife a new refrigerator. I can’t wait to see her face light up when she opens it. Did you hear about the hilarious thing that happened at the mandatory meeting? I guess you had to be there. Remember that sweet grandmother on Twitter who thought that ‘lol’ meant ‘lots of love’? “Sorry to hear about your uncle passing. lol.” Yesterday, we were standing at the edge of a cliff. Since then we have taken a huge step forward. We had to cancel the big game of tag because somebody got hurt. It was touch and go there for a while. “Of course you can count on me,” said the abacus. IBS is genetic, you know. Runs in the family. My grandfather once told me, “It’s worth investing in good speakers.” That was some sound advice. Extreme camping is in tents. The solar panel company wouldn’t let me pay for the installation. They said it was all on the house. I was chopping herbs all day, and now my hands are quite fragrant. I’ve got too much thyme on my hands. A weather balloon measures about 4 feet in diameter (adjusting for inflation). A: Have you ever had a flatulence-based tea? Like a German dietitian, I tend to see the wurst in people. I don’t care for rulers. That’s where I draw the line. Why did the farmer propose to his horse? He wanted a stable relationship. I still think whiteboards are one of mankind’s most remarkable inventions. The Earth has successfully rotated around its axis. Let’s call it a day. My daughter dropped a brand new tube of toothpaste and it made a big mess. She was crestfallen. You’ve got to hand it to customs agents: Your passport. My friend tried to steal a box of lipstick for us, but she accidentally grabbed a box of glue sticks. My lips are sealed. Elevators: They take things to a whole other level. A friend gave me an expired pack of batteries. They were free of charge. Comedy: To taste a bit like a comet. A: How many times do I have to apologize? My wife said that the battery in my hearing aid needed to be replaced. That was difficult to hear. I asked the ski lift operator if I could get a free ride to the top of the mountain. He didn’t take me up on it. What makes a sentence a tongue twister? It’s hard to say. If you visit Mexico, remember to use the word “mucho.” It means a lot to them. There are more hydrogen atoms in a single molecule of water than there are stars in the solar system. To whoever discovered the number zero: Thanks for nothing. View this post ▶
More in science
Belting your favorite song over prerecorded music into a microphone in front of friends and strangers at karaoke is a popular way for people around the world to destress after work or celebrate a friend’s birthday. The idea for the karaoke machine didn’t come from a singer or a large entertainment company but from Nichiden Kogyo, a small electronics assembly company in Tokyo. The company’s founder, Shigeichi Negishi, was singing to himself at work one day in 1967 when an employee jokingly told him he was out of tune. Figuring that singing along to music would help him stay on pitch, Negishi began thinking about how to make that possible. He had the idea to turn one of the 8-track tape decks his company manufactured into what is now known as the karaoke machine. Later that year, he built what would become the first such machine, which he called the Music Box. The 30-centimeter cube housed an 8-track player for four tapes of instrumental recordings and included a microphone to sing into. He sold his machine in 1967 to a Japanese trading company, which then sold it to restaurants, bars, and hotel banquet halls, where they used it as entertainment. The machine was coined karaoke in the 1970s to describe the act of singing along to prerecorded music. The term is a combination of two Japanese words: kara, meaning empty, and okesutora, meaning orchestra. In a few years, dedicated establishments known as karaoke bars began to open across Japan. Today the country has more than 8,000, according to Statista. The karaoke machine has been commemorated as an IEEE Milestone. The dedication ceremony was held in June in the area that houses karaoke booths connected to the Shinagawa Prince Hotel in Tokyo. Negishi’s family attended the event along with IEEE leaders. Negishi died last year at the age of 100. He was grateful that people enjoy karaoke around the world, his son, Akihiro Negishia, said at the ceremony, “though he didn’t imagine it to spread globally when he created it.” Accidentally inventing one of the world’s favorite pastimes Shigeichi Negishi grew up in Tokyo, where his mother ran a tobacco store and his father oversaw regional elections as a government official. After earning a bachelor’s degree in economics from Hosei University in Tokyo, he was drafted into the Imperial Japanese Army during World War II. He became a prisoner of war and spent two years in Singapore before being released in 1947. He returned to Tokyo and sold cameras for electrical parts manufacturer Olympus Corp. In 1956 he started Nichiden Kogyo, which manufactured and assembled portable radios for the home and car, according to the Engineering and Technology History Wiki entry about the karaoke machine. Negishi would start each morning singing along to the “Pop Songs Without Lyrics” radio show, according to a Forbes article. He typically didn’t sing in the office, but one fateful day he did. Negishi was inspired to engineer one of the 8-track tape decks his company manufactured into what is now known as the karaoke machine An 8-track tape deck can play and record audio using magnetic tape cartridges. Nichiden Kogyo’s Music Box was a 30-centimeter cube with slots to insert four 8-track tapes on the top panel, with control buttons to play, stop, or skip to the next song. Inside each 13-centimeter-long rectangular 8-track cartridge is a loop of almost 1 cm-wide magnetic tape that is coiled around a circular reel, as explained in an EverPresent blog post on the technology. A small motor inside each cartridge pulls the tape across an audio head inside the player, which reads the magnetic patterns and translates them into sound. Each tape had a metal sensing strip that notified a solenoid coil located in the player when a song had ended or if a person pressed the button to switch to the next song, according to an Autodesk Instribules blog post. The coil created a magnetic field when electricity passed through it—which rotated the spindle on which the audio head was mounted to move to the next track on the tape. Each tape could hold about eight songs. Negishi added a microphone amplifier to the player’s top panel, as well as a mixing circuit. The user could adjust the volume of the music and the microphone. He also recorded 20 of his favorite songs onto the tapes and printed out the lyrics on cardstock. He tested the machine by singing a popular ballad, “Mujo no Yume” (“The Heartless Dream”). “It works! That’s all I was thinking,” Negishi told reporter Matt Alt years later, when asked what his thoughts were the first time he tested the Music Box. Alt wrote Pure Invention: How Japan Made the Modern World. In 1969 engineers at Tokyo-based trading company Kokusai Shohin added a coin acceptor to the machine, renaming the Music Box the Sparko Box.Dr. Tomohiro Hase The fees to file a patent were too expensive, according to the ETHW entry, so in 1967 Negishi sold the rights to the machine to Mitsuyoshi Hamasu, a salesman at Kokusai Shohin. The Tokyo-based trading company began selling and leasing the machines by the end of the year. In 1969 engineers at Kokusai Shohin added a coin acceptor to the machine. The company renamed the Music Box the Sparko Box. In six years, about 8,000 units were sold, Hamasu said in an interview about the rise of karaoke. Karaoke became so popular that in the 1980s, venues and bars specializing in soundproofed rooms known as karaoke boxes emerged. Groups could rent the rooms by the hour. Negishi’s family owns the first Music Box he made. It still works. The Milestone plaque recognizing the karaoke machine is on display in front of the former headquarters of Nichiden Kogyo, which Negishi turned into a tobacco shop after he retired. The shop is now owned by his daughter. The plaque reads: “The first karaoke machine was created in 1967 by mixing live vocals with prerecorded accompaniment for public entertainment, leading to its worldwide popularity. Created by Shigeichi Negishi of Nichiden Kogyo, and originally called Music Box (later Sparko Box), it included a mixer, microphone, and 8-track tape player, with a coin payment system to charge the singer. An early operational machine has been displayed at the original company site in Tokyo.” Administered by the IEEE History Center and supported by donors, the Milestone program recognizes outstanding technical developments around the world. The IEEE Tokyo Section sponsored the nomination.
How Canada's largest city developed a 30 kilometer network of pedestrian tunnels
Bison have made a remarkable comeback in Yellowstone National Park, going from fewer than two dozen animals at the turn of the last century to roughly 5,000 today. Their return, a study finds, has had a remarkable impact on grasslands in the region. Read more on E360 →
An updated evolutionary model shows that living systems evolve in a split-and-hit-the-gas dynamic, where new lineages appear in sudden bursts rather than during a long marathon of gradual changes. The post The Sudden Surges That Forge Evolutionary Trees first appeared on Quanta Magazine
Back in the dawn of the 21st century, the American Chemical Society founded a new journal, Nano Letters, to feature letters-length papers about nanoscience and nanotechnology. This was coincident with the launch of the National Nanotechnology Initiative, and it was back before several other publishers put out their own nano-focused journals. For a couple of years now I've been an associate editor at NL, and it was a lot of fun to work with my fellow editors on putting together this roadmap, intended to give a snapshot of what we think the next quarter century might hold. I think some of my readers will get a kick out of it.
