Taste and Protest: Unveiling the Symbols at an Iranian Restaurant | May 03 2026, 19:40

A very tasty Iranian restaurant. Perhaps you didn’t know, but there are two flags of Iran. This one – the historical flag, used before the Islamic revolution of 1979, and today its use inside Iran itself is a political crime. The main difference from the official one is the emblem of the lion and the sun. Therefore, when Iranian protesters in Washington hold demonstrations, it’s interesting to see which flags they carry. If there’s four crescents and a sword in the middle, those are protesters from another camp 😉

Repurposing Components from a Broken Air Purifier | May 03 2026, 15:00

The air purifier broke down, so I bought a used one with a new cartridge for the price of a replacement cartridge plus $40. I completely disassembled the old one, extracted the reusable components, and figured out how it works. Just like in school 🙂

Inside, it comprises:

– an ESP32-WROOM-32D controller. But a part of the board responsible for voltage burned out, so it’s trash now.

– a CO sensor MQ-7 (unfortunately soldered to the board, but can be desoldered). Though, it needs a heating cycle for correct operation. First 5V (60 sec) for sensor cleaning, then 1.5V (90 sec) for measurement. But, it can also be used elsewhere.

– Plantower PMS9103M — a high-precision laser sensor for measuring airborne particulate matter concentrations (PM1.0, PM2.5, PM10). Can be connected to Arduino, specification available.

– a microwave motion sensor (radar), model RCWL-0516. Can be connected to Arduino, very simple interface. Detects motion up to 5-7 meters around within 360 degrees.

– 200W Snowfan YY225H310B motor. Also quite simple to connect, but it requires 310V DC plus 15V for speed control. But that’s all.

– a Hall sensor (magnet)

The motor is the most valuable part. It’s priced at $100 on eBay. Though, it should probably be tested first to see if it hasn’t burned out.

Exploring Word Clusters in Religious Texts from Gutenberg’s Library | May 02 2026, 03:28

It’s interesting that if you take 8000 books from the Gutenberg library and construct a graph for each based on word connections to see how “friendly” words are—if word A often appears with B, and B with C, then how often does A appear with C? There’s a metric for this—the average clustering coefficient. Then, simply sort the books by decreasing this coefficient, about 70 percent of the top will be religious books—bibles, the Book of Mormon, the Quran. Well, some of them are duplicates in a sense, because a Bible in different formats remains the Bible. But clearly, its different parts are grouped together, meaning, they definitely share commonality in these triangular words.

But what unites all the books in this top— is that they were written many years ago or, as in the case of The Night Land, written relatively recently in the same style as many years ago.

By the way, among these books shines An Introductorie for to Lerne to Read, To Pronounce, and to Speke French Trewly. This is a French language textbook, written in English during the Tudor times (around the 1530s). Soverayn lorde kyng Henry the Eight. It was written by Gilles Du Guez—a French teacher at the English court. This particular textbook was compiled for Princess Mary (the future Queen Mary I, known as “Bloody Mary”), the daughter of Henry VIII. Check out a page from the textbook. Very cool English 🙂 …ye must pronounce it letyng your lippes jointe close, so that there be but a lyttell hole in the middes.

So, I delved into this textbook. It mentions a fruit called “openarses.” As you understand, this is “open arses” in English. In Tudor England, they called a medlar an openarse. If you Google what a medlar looks like, you’ll have no questions why it’s called openarses 😉

In the anatomical section (MEMBRES LONGYNG TO MANNES BODY), the author mentions next to the eyes and ears “the nether beerde” (literally— “the lower beard”).

From Wooden Puppet to Beloved Boy: The Evolution of Pinocchio’s Tale | May 01 2026, 16:52

It turned out that initially Carlo Collodi, who wrote “The Adventures of Pinocchio,” did not intend to turn his hero from a wooden puppet into a real boy. Pinocchio was destined to be hanged by the Cat and the Fox on an oak tree—as a lesson to all children who lie and disobey their elders.

The author was persuaded to continue Pinocchio’s adventures by the editor of the “Children’s Newspaper,” who said that otherwise it would be their last publication. The readers were so outraged by the death of the hero that the editorial office was inundated with letters demanding a continuation.

Eventually, after a few months, the author was forced to “resurrect” the puppet. This is how the Blue Fairy appeared in the story, who saved Pinocchio from the noose, and the grim parable gradually turned into the familiar fairy tale with a happy ending.

When Pinocchio was already hanging on the oak tree and gasping for air, a Beautiful Girl with Azure Hair appeared at the window of a nearby little house. At that moment she is described not as a kind fairy, but rather as a ghost or spirit (she says that everyone in this house died, and she too is waiting for her coffin).

Seeing the puppet dangling from the tree, she took pity and organized a whole rescue team. The fairy clapped her hands three times. A giant Falcon arrived. She ordered him to fly to the Great Oak, gnaw through the rope with his beak, and carefully lower Pinocchio onto the grass. Then she summoned her servant—a poodle named Medoro. He was dressed in festive livery, with a cocked hat and a curly wig. Medoro was sent for Pinocchio in a luxurious carriage drawn by a hundred pairs of white mice. When the puppet was brought to the castle, he was neither alive nor dead. To decide what to do next, the Fairy summoned “luminaries” of medicine. By Pinocchio’s bed came the Crow, the Owl, and the Talking Cricket (the same one that Pinocchio “killed” at the beginning of the book, but he returned as a spirit).

Harsh.

Essentially, the hero owes his happy ending not to the author’s mercy, but to commercial success and public pressure.

Harnessing Chat Data for Semantic Q&A Search | April 30 2026, 04:05

In one evening, I created a simple utility that extracts the Natural Language Processing chat for a year and a half – there are 65,000 messages, and converts it into question-answer pairs with semantic search available. Clicking on a search result (on the left) opens the dialogue in the chat. The messages that are responses to the question are highlighted. And at the top, the original phrasing of the question is highlighted as well.

How it works: the system assumes that people mainly reply to messages that are relatively close in the past. If several replies are made to one message, then it is likely useful and caught the interest of others in the chat. The system takes messages starting from the one many have replied to, ending with the last in the reply-to chain – and among such messages, it selects those that have at least 3 reply-tos to the original question. In essence, it cuts a piece from the chat starting with a popular question so that after the bottom cut, most likely, irrelevant content follows. Such blocks can overlap each other – for example, if someone asked a question while others were replying to something else.

So, if user A asked what the weather was like, and they received answers like “good,” “bad,” “rain,” and there were five messages without a reply-to, and then someone replied to “rain” with the question “why rain”, and five more people replied to this question, then the first question about the weather makes it into the system – the piece ends with 13 messages.

Afterwards, these pieces are summarized into question-answer pairs.

It turns out quite cool.

P.S. In the screenshot, the search query has nothing to do with the search result because I foolishly took the screenshot after I changed the query but before I hit send.

Peripheral Vision: Unveiling Optical Illusions in News Apps | April 29 2026, 17:56

I’m trying to figure out if it’s just me or do other people experience this too 🙂 if you look anywhere except at the word “Omurbekova”, the line highlighted in red in the second screenshot (which is actually white) is distinctly visible in your peripheral vision. But as soon as you shift your gaze directly to it, the line disappears. That is, it’s only visible peripherally. Share your experiences 🙂

Misadventures in Keyboard Layouts: Searching for Gremlin, Finding Surprises | April 28 2026, 20:33

This is me typing the word gremlin, without switching the keyboard layout. Wanted to read about the query language for graph databases, need it for work. Google surprises, it does surprise

Rethinking Karma: A Crafted Tale of Redemption and Survival | April 27 2026, 21:37

An interesting interview with Ilya Remeslo by Sobchak. But if I were Ilya’s political technologist, I would have suggested a much more coherent story: as if, one morning, he woke up, looked back at the past, and decided to fix his karma, rather than drown. Everything I did before that morning – my past life. We can talk about it, but for me, it is a closed page, I am ashamed of it, and if someday they decide to punish me for it – it would be fair, I am ready. If they punish for today’s stance – it would be unjust, but I am ready nonetheless. Either option is better than drowning, hence the boldness. Such a story would have been much more coherent, and it doesn’t matter if it has anything to do with reality.

From realistic explanations, I keep to myself that the guy was genuinely threatened with death, someone close to the powers that be, unclear why, the reasons could be numerous, and from all the options on what to do, this one had the best chances of staying alive because if the threat is realized now, the ratings will drop even more. Well, if he is jailed, it’s almost state protection from threats.

There’s one more thing. Possibly, this individual made it known to the right people that if he is locked up, some very serious dirt will immediately go to the media, but if nothing happens to him, there will be silence.

Colorful Climbing: A Fun Indoor Adventure with Masha | April 27 2026, 15:03

Went to the mountains with Masha. Yellow paths over yellow, red over red. The organizers should put a box of candies at the top. Found out that the muscles in my fingers are non-existent, and the rest hurt the next day. Cool experience (not the first time)