The Evolution of Mermaids in Russian Folklore: From Legged Creatures to Aquatic Tails | August 08 2026, 02:15

WOW, it turns out that mermaids in Russia actually had legs, and if you asked about the tail, they would tickle you to death or drown the curious in the nearest pond. A specific feature — tousled blonde hair, hence the phrase from Dal “walks like a mermaid.” The name itself, however, is not from the type of blonde hair, but from “rusalki” — a spring commemorative festival.

And the tail actually came from sea maidens (mermaids). Mermaids are an invention of peoples living by the sea. In general, how mermaids merged with them in our perception is unclear, but it happened relatively recently.

Although there is one assumption. In Andersen’s tale, the little mermaid — literally a sea maiden (Den Lille Havfrue). But in Russian translation, it was called “Rusalka.” Lermontov has a poem “The Mermaid” from 1831, where she swims in a river. Surely the modern reader imagines a tail. There’s also a tale by Orest Somov, where the mermaid runs away from her mother, and her unfaithful lover—the Pole, was tickled to death by mermaids.

I illustrate with an 1871 painting by Ivan Kramskoy. With legs and Makovsky’s “Mermaids” (1879) – Makovsky painted it on an estate on the border of Chernigov and Poltava provinces, near Dikanka — that very Gogolian Ukrainian night, i.e., the same literary source as Kramskoy. They would have been very surprised by a tail. Also adding Prushkovsky’s Mermaids” (water nymphs) from 1877. Also attaching a drawing by Ivan Bilibin (1934).

By the way, those who depict mermaids with tails on trees – think about how she climbed up there.

Deciphering Tolstoy: Lost in Translation | August 06 2026, 21:36

I wonder what word our Leo Tolstoy had in mind in “War and Peace,” “lost the wolf” or something harsher? I take the English translation off the shelf, there it’s b——ed, apparently buggered, so it’s definitely “lost the wolf.”

From Bar Joke to Millionaire: The Unbelievable Success of the Pet Rock | August 05 2026, 00:55

Today I found out that the most successful product of Christmas 1975 was a rock. Just a regular rock. Gary Dahl, an advertiser from California, was sitting in a bar and listening to his friends complain about their pets – feeding them, walking them, cleaning up after them – and jokingly said that he had the perfect pet – a rock. It doesn’t need feeding, doesn’t poop, doesn’t die. The joke turned into a business plan over the course of the evening. Dahl bought smooth pebbles from Rosarito Beach in Mexico for about a cent apiece and sold them for $3.95 each. Every rock was shipped in a cardboard carrying box – with air holes “for breathing” and straw bedding inside. And here’s the kicker: the product wasn’t the rock. The product was the accompanying 32-page care and training manual, written stone-faced (pardon the pun): commands like sit” and lie down” are learned instantly, come here” and fetch” are a bit harder, and it executes the command “die” brilliantly.

Within a few months, over a million units were sold, Dahl became a millionaire, he was written about in magazines and invited on television. By early 1976 it was all over, warehouses remained filled with unsold rocks, and attempts to replicate the success with other novelty products failed. Dahl died in 2015, but the Pet Rock brand lives on: the rock in its original packaging can still be purchased today.

(How I came across this. I am currently reading Gone Girl by Gillian Flynn and came across the phrase “They were the Pet Rock of parenting.” – referring to Amy’s parents. I did not understand it and went to google what this Pet Rock was.)

The Rise and Fall of the Pet Rock Craze | August 05 2026, 00:55

Today I learned that the most successful Christmas product of 1975 was a rock. Just a regular rock. Gary Dahl, an advertiser from California, was sitting in a bar listening to his friends complain about their pets — feeding them, walking them, cleaning up after them — and jokingly said that he had the perfect pet: a rock. It doesn’t need to be fed, doesn’t poop, doesn’t die. What began as a joke that evening turned into a business plan. Dahl bought smooth pebbles from Rosarito Beach in Mexico for about a cent apiece and sold them for $3.95 each. Each rock came in a cardboard carrying case — with “breathing” holes and straw bedding inside. And here’s the main point: the product wasn’t the rock. The product was the accompanying 32-page care and training manual, written with a stone-faced (pardon the pun) seriousness: the commands “sit” and “stay” are learned instantaneously by the pet, “come here” and “fetch” not so much, and it performs the command “die” brilliantly.

In a few months, more than a million units were sold, Dahl became a millionaire, and he was written about in magazines and invited on television shows. By the beginning of 1976, it was all over, warehouses remained with unsold rocks, and attempts to repeat success with other novelty products failed. Dahl died in 2015, but the Pet Rock brand lives on: you can still buy a rock in its branded box today.

(How I found this out. I’m currently reading Gone Girl by Gillian Flynn and came across the phrase “They were the Pet Rock of parenting.” – about Amy’s parents. I didn’t understand it and went to Google what this Pet Rock was.)

The Art of Beauty Marks in Historical European Portraiture | July 28 2026, 06:34

It is interesting that the artist did not hesitate to place a black beauty spot on the temple of the hawthorn seller in this painting. At that time, it was a very typical accessory. They were applied to cover skin defects and quickly became an essential element of makeup. The black color of the beauty spot fabric created a strong contrast, visually emphasizing the aristocratic paleness and whiteness of the face, and also drawing attention to the eyes. In Europe (including Spain, where Lorenzo Tiepolo worked), there was a complex “language of beauty spots”. Depending on where the piece of fabric was attached, it conveyed a specific message to suitors.

But they probably would not have understood piercings and tattoos 🙂

The CIA’s Secret Role in Promoting American Avant-Garde Art | July 28 2026, 05:15

Today I learned that the popularity of American avant-garde worldwide turns out to be the result of a CIA program—at least in part. During the height of the Cold War, starting in 1950, the CIA secretly funded magazines, concerts, and exhibitions throughout Europe through the “Congress for Cultural Freedom” and front organizations (the most famous being the Fairfield Foundation). The idea was simple: to demonstrate that the free West produces bold experimental art, while the USSR produced only state-controlled socialist realism. For example, when London’s Tate Gallery couldn’t afford the “New American Painting” exhibition in 1959, a “generous patron” Julius Fleischman suddenly appeared—though the funds actually came from the intelligence budget.

The most astonishing fact is that the artists themselves had no clue. Pollock, Rothko, de Kooning, who came from the left-wing bohemia of the 1930s, despised the government and the era of McCarthyism, and would have considered it insulting to work for the intelligence. The CIA didn’t propose: they didn’t pay the artists or dictate anything, they simply “promoted them in the dark,” paying for the infrastructure of fame through two or three layers of intermediaries. It reached the point of absurdity. While one hand of the government secretly transported their canvases across Europe as a symbol of American freedom, the other—the FBI and conservative congressmen—kept files on the modernists and branded their art as “communist smears.”

Exploring the Missing Trojans: Homer’s Illusive Episodes | July 21 2026, 18:14

Tomorrow I will go to the Odyssey. Remember the Trojan Horse, the snakes, Laocoön, and “beware of Greeks bearing gifts”? So, it turns out that the most famous episode of the Trojan War isn’t in the “Iliad”—the main poem about this very war, and things with the Odyssey are also tricky. In the Iliad, Homer ends the story earlier: the “Iliad” covers only fifty days of the last year of the siege and ends with the funeral of Hector—there’s no horse, no death of Achilles, nor fall of the city in it. In the “Odyssey,” the horse appears a couple of times but only in passing: the bard Demodocus sings about it at a feast, Menelaus recalls how Helen walked around the horse and mocked the voices of the Greeks hidden inside. That’s it. There is no elaborate scene of assault and fire in Homer’s works at all. And that canonical story—with the spy Sinon, Laocoön strangled by the snakes, and burning Troy—is from the Roman Virgil, the second book of the “Aeneid,” written in the 20s of the 1st century BC, almost seven hundred years after Homer. It is precisely from there that the plot leaked into pop culture.

But Virgil did not invent the horse out of nowhere. Between him and Homer, there was an entire “epic cycle”—a series of poems that covered the entire war from beginning to end: “Cypria” (prehistory: the judgment of Paris, the abduction of Helen), then “Iliad”, then “Aethiopis” (the death of Achilles), then “Little Iliad”—here’s where they finally build the horse,—then “The Sack of Ilium”, where they roll it into the city and the massacre begins, and then “The Returns”, “Odyssey”, and a somewhat odd “Telegony” for dessert. Out of the eight poems of the cycle, only two Homeric ones fully survived. The other six—including both with all the salt about the horse—have disappeared and are known only from a later synopsis-summary and scattered quotations, totaling about a hundred lines. That means we have the middle and epilogue of the story at hand, while the beginning and the climax in the original are lost.

Turns out, we’ve been retelling a scene for centuries, the authentic text of which we don’t have.

P.S. A separate story about whether Homer was blind. And whether there was a Homer. It’s all very complicated 🙂 But that’s a story for another time.

Engineering Zen: Mind-Bending Science and History Revealed | July 13 2026, 16:16

Reminding you that I have an Engineering Zen group on Facebook and Telegram. Recently, there have been posts about:

– The British plan to build an aircraft carrier… out of ice. Measuring 600 meters in length — the largest ship in history. Material scientists found an additive that makes ice as strong as concrete. A prototype was actually built — its remnants still lie at the bottom of a Canadian lake.

– The fact that no one really knows why a bicycle doesn’t fall over. For a century and a half, textbooks offered two beautiful explanations — until in 2011 they built a bicycle that disabled both effects. By all laws, it should fall over. Yet, it rides.

– How the military communicates with submarines through the depth of salty water, where radio waves cannot penetrate. The Americans nearly turned 40% of the state of Wisconsin into an antenna, while the Soviet system used the Earth’s crust itself as an antenna. Efficiency — megawatts in, a couple of watts out. And that’s enough for almost the entire globe.

– That very rotor with blades behind glass, which has been explained incorrectly for 150 years. Maxwell was initially pleased — but then they noticed it spins the wrong direction. The correct answer is much trickier, and it specifically requires a “non-ideal” vacuum.

– Why a fridge magnet sticks only on one side, and barely on the other. It turns out, it’s the same trick used to focus beams in particle accelerators. And it has a very non-obvious “flip side.”

– The “Silicon Lottery”: chips from the same production line turn out different, and your processor might just be a flawed model of a higher-end version with blocks disabled. And in the 90s, there was a coprocessor that, upon installation, simply switched off the main processor and worked instead.

– Undersea cables that carry the entire internet: as thick as a garden hose, under 20 kilovolts, amplifying light directly with light — no electricity involved. And why traders are willing to pay for the fact that light in fiber is “too slow.”

– The Hoover Dam, inside which nearly 1000 km of piping is hidden — otherwise, the concrete would have taken 125 years to set and it would have cracked from tension. It was cooled with an on-site ice plant.

– And for dessert — the fact that trolleybuses, electric cars, faxes, drones, video calls, and even humanoid robots are much older than you think. One of the robots walked, talked 700 words, counted with his fingers, and smoked. In 1939. Seems we’re just dusting off the past.

Join us to not miss much more interesting stuff.

“Engineering Zen”, Engineering Zen and on Telegram t.me/engineersdzen

Exploring Engineering Zen: Uncovering the Secrets of Technology and Science | July 02 2026, 21:47

I’m reminding you that I have an Engineering Zen group on Facebook and Telegram. In recent days, there have been posts about:

– Why a fridge magnet sticks only on one side, and barely on the other. It turns out, this is the same trick used to focus beams in particle accelerators. It has a name and a very unobvious “inside out”.

– A skyscraper in New York that could have been toppled by wind — and which was secretly fixed “live,” at night, while during the day offices went about business as usual. It all started with a student doubting the calculations. The story was then classified for almost 20 years.

– The fact that trolleybuses, electric cars, faxes, drones, video calls, and even humanoid robots are much older than you think. One of these robots, by the way, walked, talked about 700 words, counted on fingers, and smoked. In 1939.

– “Kelvin’s Thunderstorm” — dripping water that pumps thousands of volts and strikes with a spark. Completely without a power source. It is assembled on a kitchen table, and the energy comes not from what you might think (and it’s not a perpetual motion machine).

– A fax machine that became commercially successful before the telephone. A two-meter-tall eight-kilogram pendulum with a needle, 1860s. Guess who was the main customer.

– A simple soap film, which instantly “solves” a problem still unsolved by mathematicians in general terms. Without performing a single computation.

– Hoover Dam, inside which nearly 1000 km of pipes are hidden — otherwise, the concrete would have taken 125 years to set and would have cracked. How exactly they cooled it is a separate attraction with an ice plant right on the site.

– Those very same rusty “rusty” iron pieces sticking out in every fashionable square. They rust deliberately, and that is precisely what makes them almost eternal. Of course, they were not designed for beauty.

– Why memory cannot be erased by force of will — and why it’s so easy to inadvertently rewrite it. Also explains why so many people want to go back to the USSR.

– Benford’s Law: the first digit of a random number does not appear haphazardly — a one is at the forefront in almost a third of cases. It is used to catch fraudsters, and is even accepted as evidence in court.

– And for dessert — the world’s best mechanical calculator the size of a can, designed by a Buchenwald concentration camp prisoner. It was this work that saved his life.

Join us to not miss out on many more interesting things. “Engineering Zen”, @engineersdzen