Category: Tech

Chicago Airport’s Cannabis Amnesty Boxes: A Pre-Flight Solution | October 18 2025, 22:07

At Chicago Airport, there are these boxes for voluntary donations of marijuana to the police. And they are located AFTER the TSA screening line.

“These boxes belong to the Department of Aviation, but are serviced by the Chicago Police,” said police representative Maggie Huynh.

In general, they give passengers flying from Chicago the opportunity to dispose of marijuana before boarding the plane, as transporting it across state borders is illegal. Although marijuana remains illegal at the federal level, authorities claim they do not intend to arrest people found with it at Chicago airports. The TSA stated that if marijuana is found, they will refer the matter to the police. Chicago Police, while not recommending traveling with drugs (nicely said), states that they will not arrest a person if the amount they possess does not exceed the legal limit. They simply direct them to this box to voluntarily surrender what was found (what else to do with it, as carrying it on the plane is illegal by law)

So why use these specific boxes instead of, say, a regular trash bin? Because, as Huynh explained, only police have access to these boxes and can empty them — this helps prevent the marijuana or related products from falling into the “wrong hands.” And evidently, they must incinerate the waste somewhere…

AI Salesbots at Your Door: The Future of Autonomous Presentations | October 16 2025, 15:47

I’m telling the manager now, why do we need to present our AI solution, it’s AI, let it present itself. I imagine that in the near future, bots will be knocking on doors to sell themselves (and maybe not just themselves), while the door will have built-in bot protection.

Navigating a Luxury Hotel: A Maze of Misdirections | October 16 2025, 05:55

I currently live in a luxury hotel (as they describe themselves) for $400 a night. It must be said, I barely found a hotel – everything was sold out. It all started with the fact that there was no hot water in the room. They gave me a new room, which also did not have hot water. But in this new room, a plumber came and whacked the faucet, causing it to turn even more, and then the warm water started flowing. Well, good, now I know how to bang it. But I spent almost half an hour searching for this second room, wandering the corridors and following signs that lead nowhere. When I told the receptionist that only ghosts could improve my mood from the lack of hot water and the forced move, the lady at the reception smiled cunningly and said that anything can happen. And after that, I spent half an hour looking for the room.

Imagine, you are given room 446. You exit the elevator. There you see signs

“to the right 438-456”

“to the right 466-476”

“to the right odd rooms”

“to the left 400-432”

“to the left 478”

You follow the corridor and at the very end of it

“to the right 439-487”

“straight 429-437”

“back 427-401”

Ok, I have 446, so to the right. There’s a door

“straight 439-477”

Hm. Ten rooms just lost by turning towards the door. Well, alright, my 446 is somewhere here.

You enter, and it’s not there. There’s 445 and 447.

It turned out that as I walked from the elevator following the arrow “to the right 438-456”, it wasn’t in vain it said “to the right – odd”. But then where are the even ones? Also to the right! Just not mentioned. The even numbers are behind one of the doors marked “to the right – odd”. You have to walk about ten meters and see on the right side of the corridor a blind door of the same style as the wall with a “exit” sign and numbers 438-454. So the even numbers are behind this door, but how would you know? And what if you have 445? Well good, we go through the door. But there’s nothing there.

Absolutely nothing, just stairs to the fifth and third floors. But there’s also an unmarked door. And behind this door, hurray, even numbers.

Whoever navigated this needs to be beaten with whips. The fact that the hotel is 132 years old does not excuse it)

From Tesla Model Y to Model S Plaid: A Swap Experience | October 14 2025, 16:51

Recently, my Tesla Model Y fell ill, and the dealership gave me a Model S Plaid as a loaner car. It’s simply a monster, accelerating to 100 km/h in 2 seconds. Over a thousand horsepower. But after driving it for a week, Nadezhda and I realized that we would still not trade our Model Y for a Model S.

Well, the fact that it’s unusually low to the ground is a minor issue. We would get used to that. But getting out from behind the wheel is always incredibly awkward for me. My belly isn’t that big, but in the Model S, it’s like a real cockpit. You have to carefully sit down and climb out, whereas in the Model Y, you just jump in somehow and go.

Moreover, the Model S is really noisy inside compared to the Model Y. You can hear the road. And this is for a price twice that of the Model Y. Also, for some reason, the mode where you just walk away from the car works less sensitively, and locks the car only when you are already quite far away.

And then there are the turn signals. What idiot decided to put their buttons on the steering wheel? It’s impossible to get used to that. The steering wheel still turns, and the buttons are always somewhere unclear.

But, damn it, it’s very beautiful from the outside. Especially with a light interior.

By the way, Tesla has somewhat poorly thought out the mechanism for issuing a replacement car, and it works with only one driver. You can’t set two keys for two different phones. Moreover, it would be nice to store the settings in the cloud and receive a replacement car already adjusted to your preferences.

And the car fell ill in an interesting way too. It’s funny when the car on the highway tells you that there’s a little problem, the engine is dead, but you should not distract yourself, just keep driving. After parking, the car might theoretically not drive, but so far all is normal. If not, we will tell you. Meanwhile, your drive will not sound the same.

As I understood, the car simply switched from 4-wheel drive to 2-wheel drive. Funny that such a fallback exists at all. Already fixed, it needed an inverter replacement.

Gold and Gadgets: Tracing Global Influence and Metal Monopolies | October 14 2025, 03:13

Rajesh Exports states on their website that they process 35% of the gold mined on the planet. Of course, they are exaggerating, but overall, India and Rajesh do shape the market. It turns out that 11% of all the gold on the planet is adorned on Indian women. Additionally, it was found that in 1947, 70% of all mined gold was in the USA. From 1934 to 1970, it was legally prohibited for private individuals to own gold in the USA. Approximately 22% of all the gold ever accounted for on the surface of the Earth has been mined from a plateau in South Africa called the Witwatersrand. And if you consider all the gold mined throughout history, it would amount to less than an Olympic swimming pool.

China buys up silver, with India not far behind. Interestingly, platinum is significantly used in the production of catalytic converters for vehicles – almost 40% of the global production goes there. China, of course, holds much of this production.

Practically every smartphone, tablet, or touchscreen monitor that we use is coated with a thin layer of indium tin oxide (ITO). This material has a unique combination of properties: it is almost completely transparent while also conducting electricity excellently. This allows the screen to register your touches.

Although lithium is now strongly associated with batteries, historically and still today, a significant portion of it is used in the production of glass and ceramics.

Decoding Solr and Lucene: Engineering Insights and Algorithms | October 06 2025, 17:11

Preparing a book for publication on Solr&Lucene. What do you think about publishing such a translation on Amazon? 🙂

The book is about algorithms and under-the-hood engineering. I haven’t seen books from this angle yet, maybe someone will find it interesting.

Privacy Pitfalls of Outlook Notifications During Screen Sharing on macOS | October 06 2025, 14:05

Microsoft has one very nasty thing with Outlook for MacOS, which for some reason nobody tries to fix. If you have a meeting in 30 minutes, Outlook reminds you with a popup showing the upcoming meetings, where it “highlights” these meetings. Well, in my case, there’s no secret here, I could even share my screen during that time. But it would be nice if such notifications didn’t appear while screen sharing, especially while recording, because screen sharing goes through Teams, which is part of the same package as Outlook.

But what’s worse is something else. If you try to CLOSE this notification window while screen sharing on MacOS (especially if the recording is on), it causes the whole Outlook with all the emails there to pop up. And there might be things there that the viewers shouldn’t see. That is, by _closing_ the window, you suddenly reveal the titles of email messages. Which is completely unexpected (well, until you step on these rakes, then it’s not unexpected anymore).

When Pigs Outsmart Technology: The Failure of Precision Feeding in Large Farms | October 05 2025, 17:01

Today I learned how scientific achievements fly under a pig’s tail when faced with reality.

There’s this thing called precision feeding in pig farming. The gist is: a pig has an RFID chip attached to its tag (actually to its ear), and when it wants to eat, it sticks the tag into the feeder – and a special sensor reads its data and dispenses exactly as much feed from the machine as it should, also recording in a database how much and when it was given. If the pig sticks its tag in too early, the feed machine won’t dispense any. The idea is to reduce feed costs, improve growth and health of the animals, and lessen environmental pollution (less uneaten feed).

It seems like a great idea. However, such a system doesn’t work where there are large populations – it only works in specialized productions with few pigs, where almost all are known by name.

Why doesn’t it work on a large scale?

Because pigs are very cunning and quickly adapt. One pig inserts a tag, and then the one higher in the hierarchy chases it away and eats what isn’t meant for it.

Whole classes of oppressed arise, whose role is to insert the tag so that the authorities can gorge themselves. In the end, chaos ensues and no precision is achieved.

This is how pigs oppose technological progress.

Exploring the Chaos Game: Creating Fractals From Randomness | October 04 2025, 15:32

I read something interesting today. About fractals. If you take any three points that form a triangle, and then a fourth point anywhere, and subsequently throw a dice, the faces of which are assigned to the first three points. Next, you move from the current point towards the point corresponding to the result on the dice and place a new point halfway; this becomes the new current point. After many iterations, the points start to form the Sierpinski triangle – the one shown in the attached picture. Intuitively, you would think the triangle should be fully filled because it involves random movements in three directions from a randomly chosen point, but no. Moreover, it works even if the starting point is inside the future empty triangle (yes, a few points will disrupt the picture, but that’s it). If you start our experiment with five or six points instead of three, different shapes will form – see the attached picture. This graphical method is called the Chaos Game.

By the way, it may seem obvious, but in case you wondered — all the presented figures have zero area.

If you take two triangles and with a probability p move towards random vertices of the first, and with (1-p) towards random vertices of the second, you end up forming a Barnsley fern (picture №2).

I love such things because they seem like magic at first glance 🙂

(It’s a kind of problem from the same class as the synchronization of metronomes)

AI Microphone Chaos: Blending Office Sounds into Unexpected Poetry | October 01 2025, 15:44

Bought myself an AI microphone that listens to everything around and provides summaries. Decided to test it once. With it, you can’t even watch reels with the mic turned off on your computer, because it tries to merge and summarize everything it hears 😉

“..The team methodically moved through complex comparisons, but unexpected phrases like ‘Watch the video back if you didn’t notice’ and ‘Don’t be a sucker’ created a quiet, almost poetic dissonance—as if the universe whispered ‘Let it be’ amid spreadsheets and sprint tickets….”