Understanding Your Dishwasher: Hot Water Connections and Built-In Heat Exchangers | June 08 2026, 12:43

I know how a dishwasher works. I’ve fixed it a couple of times => read the technical details. In the USA, it’s connected to the hot water supply on entry. Dishwashers have a weak heating element; it increases the temperature by only ~3°C/min, so heating up a full tray from scratch takes a while. It’s a good practice to run the hot water tap to warm up before starting the dishwasher. In countries with 220V, dishwashers often heat the water themselves. Bosch has an interesting solution: a heat exchanger in the wall. While the water heats up and is sprayed by the spray arms, a new batch of water pours into the heat exchanger. Then, the temperature of the new water batch slowly rises – while the ambient temperature in the chamber gradually drops, to avoid thermal shock for glasses when switching from dirty to clean water. And additionally, the heat exchanger provides a cold surface for drying – water from steam condenses there.

And everything stops not just on a timer (or rather, not only), but also by a turbidity sensor — an aquasensor. An infrared LED and a phototransistor inside the tray. It shines a beam through the water: strong signal received — water is clear, dishes are clean, time to wrap up; weak signal — too much dirt, need to keep running. That is, the machine itself decides whether to add a rinse. It also estimates the volume and dirtiness of the load — partly by the same turbidity, partly by how much the water cools when it’s sprayed onto the cold dishes (thermal mass) => the same Auto program can last either 1.5 hours or 3.

And here’s the most counterintuitive part. You should not rinse dishes before loading them. It’s not just soap, but a cocktail of surfactants (reduce surface tension), emulsifiers (make fats mix with water), dispersants (keep washed off dirt suspended so it doesn’t settle back), and enzymes (protease, amylase). Enzymes need food to latch onto. The main dirt on dishes is not fat (handled by surfactants and emulsifiers), but dried/burnt proteins and starches – large polymer molecules, insoluble in water and just mechanically adhering to the plate. You can’t knock them off with a jet, and there’s no one to rub them off. Enzymes — biological catalysts, cut these long molecules into small soluble pieces (protein into peptides and amino acids, starch into sugars), and these bits then easily wash away with water. Protease works on proteins, amylase on starch, sometimes lipase is added for fats. If you rinse everything off in advance – they just have nothing to do, washing off idly. If the aquasensor sees clean water at the start, it decides there’s not much to do, shortens the cycle, reduces intensity. Rinsing — you make the machine wash worse (but faster). Just scrape off solid chunks and load as is.

Insight about capsules. With each drain, water also carries away the dissolved detergent, so the machine injects the main dose only in the main wash — after it has drained the dirty preliminary water. But the pre-wash compartment is open, with holes, and the detergent leaks out right away. The capsule only opens in the main cycle, so for the first 10 minutes the machine runs clean water idly and no one is dealing with the fat then. That’s why powder is better than capsules: you can charge both compartments, and the pre-wash immediately tackles the fat.

The Evolution of Telegrams: A Luxury Legal Service in the USA | June 07 2026, 15:04

WHOA, in the US, telegrams haven’t yet been blocked, and they have transformed into an insanely expensive elite legal service, monopolized by American Telegram and iTelegram (both successors of Western Union). An urgent cable costs $34.95 base plus $0.79 per word. Additionally, they officially charge a $20.00 surcharge for home delivery, $25.00 for sending on a weekend, and up to $200.00 if you dictate the text to a live operator. Even sending a regular e-mail through their service will set you back $14.95.

The main source of income is the emergency cancellation of commercial contracts under the federal “3-day rule.” By law, contracts are terminated the second a telegram is sent. Companies are required to recognize the timestamp of American Telegram, authorized by the FCC, which provides ironclad protection in court. For 100% legal force, the service cunningly imposes on clients a delivery report and an archive copy — at $12.95 for each checkbox.

Their rates still include astonishing rules: “a word” is considered any group of characters up to 7 signs (more than that counts as two words), and a fee of $10.00 is automatically imposed for text in any language other than English. Special “War Zone” rates for messages to soldiers still apply ($20.00 base + $0.89 per word) and international cablegrams to sea vessels are sent strictly at the “risk and peril of the sender” with no guarantee of response.

Imagine, to save money, entire code books were published in the early 20th century that replaced complex thoughts with a combination of letters that looked like a word (link in the comments). POTUS and SCOTUS are from there.

Navigating Price Adjustment Policies at Major Retailers | May 27 2026, 21:53

I found out that if you bought a jacket or a TV (for instance, at Target, Best Buy, or Costco), and a week later that item went on sale, you can come back with your receipt within 14–30 days. This is an official policy of almost all major Western retailers, it’s a standard of customer service and is called Price Adjustment. However, a receipt is often necessary. Most stores suspend this policy during the Black Friday season, Cyber Monday, and special holiday promotions.

The Overmedication of American Children: A Deep Dive into Prescription Trends | May 13 2026, 19:29

Today I dug up something interesting about kids and pills.

Local doctors are somewhat surprised that I’m not on any medication. Recently, an acquaintance of a doctor said in passing that he has lots of young patients who regularly take 12–14 pills a day. I started researching — and my eyes nearly popped out.

I found that according to CDC data, nearly one in five children under 12 years old are on prescription drugs. In the 12–19 age cohort, it’s every third one. Moreover, the rate among boys up to 12 years old is one and a half times higher than among girls, which is largely explained by early ADHD diagnoses. If we’re talking about long-term use (3 months or more continuously), a fifth of all children and teenagers are involved. It is reported that ADHD was diagnosed in 11.4% of children, about 7 million people, approximately every ninth child in the country. Of those with an active diagnosis, 53.6% are taking stimulants (Adderall, Ritalin, Concerta, and equivalents). In terms of the entire child population, this means about 6% of American children are constantly on psychostimulants. Besides ADHD, there are antidepressants, anti-anxiety meds, and antipsychotics. 9.3% of all children ages 5–17 have taken some kind of “mental health” medication. Among teenagers 12–17 years old — 10.7%.

This is probably the most interesting thing I’ve found. The variability between states is threefold. In Louisiana, ADHD is diagnosed in nearly every fifth child, in California – three times less often. In Louisiana 80.2% of the diagnosed children were immediately put on medication, in California – 66.7%. The southern cluster (Louisiana, Mississippi, Alabama, South Carolina) consistently shows the highest figures.

Even more interesting is the breakdown by urbanization. In large metropolises, 7.1% of children take psychotropic drugs, in small towns — 8.5%, in rural areas — 12.1%. Yet, the proportion of those receiving psychotherapy is the same everywhere — about 11–13%. Why is that? Because rural areas disastrously lack psychologists and behavioral specialists, and the pill becomes the only alternative.

There’s a separate phenomenon — polypharmacy. This is the simultaneous use of 2+ drugs for over a month. Growth from 1.8% in the early 2000s to 3.3% today. About 300,000 American children regularly take three or more classes of psychotropic substances at the same time. And for children with complex chronic conditions (Children with Medical Complexity), the situation is completely off: 52.7% take 5+ medications daily, and 19.5% take more than 10 medications per day. Thus, the stories about 12–14 pills a day. Reports say that approximately every 12th child in the USA, taking multiple drugs concurrently, risks serious drug interaction. For teenage girls on combination therapy, this risk reaches 20%.

Reading why this has happened.

It turns out that here the child’s psyche is increasingly perceived as neurochemistry that needs to be corrected with a pill, rather than as a result of sleep, stress, family environment, and a heap of other factors. Or at least the parents understand that since the rest is not fixed, the pills are an easy way out. Deprescribing (planned drug withdrawal) is hardly practiced — it’s easier to prescribe than to take off.

Secondly, rates for commercial insurance visits to a psychotherapist are on average 22% lower than for a visit to a somatic specialist. As a result, 18.2% of psychologists operate outside insurance networks (compared to 1.7% of somatic specialists). Our family pays an average of $1507 a year for psychotherapy on top of the insurance. But the pill is covered by the formulary, and the prescription copay is minimal. What choice will a tired family make? Why we are unable to raise children without mental health issues is another big topic.

Well, and another interesting point. According to our laws, an official ADHD diagnosis requires the school to provide the child with “Sec 504”: double time on tests, reduced homework, a separate quiet room for exams, allowed breaks during lessons. In the race for college admission, many parents from affluent layers consciously go for a diagnosis — it’s a legal way to give a child an advantage. And here’s the delicate part: Sec 504 specifically forbids the school from considering the effect of “mitigating measures,” which the law counts as medication. Meaning, even if the child on medication is fully functional and excels in studies — their privileges are maintained. There is simply no incentive for the family to decrease the dosage or get off the drug. The system is set up to keep the child on medication until graduation.

Sky-High Prices at the CIA-Adjacent Gas Station | April 11 2026, 21:16

We have one gas station near the CIA that simply sets gas prices 40 percent higher than anywhere else. Just an ordinary shabby station that follows the principle of “if it works, don’t fix it.”

Navigating Tornado Warnings: Safety Over Probability in the US | March 16 2026, 17:59

Today a tornado warning was issued. A warning is issued if radar detects conditions favorable for the formation of a tornado. In the end, there was a little rain at the exact predicted time (within about 10 minutes). It came, poured down, and moved on. Everything was canceled everywhere. A bunch of people are still on edge. The principle in the USA: safety is more important than anything, even if the probability is nearly zero, if the consequences threaten life, a small probability is weighed against high seriousness and ultimately maximum protocols are activated. When assessing risk, the most pessimistic option is chosen because if you’re wrong – you remain responsible. People head down to basements, children are locked in gyms, etc.

Everything seems fine, but such a reaction to bad weather and similar troubles instills a behavior of excessive caution for life, and people simply choose comfort and are scared to death of thunderstorms and snowfalls. Not sure if this is right or wrong.

Check out the weekly temperature swing from 21 to 0 and back to 23.

Insights from a Visit to the Civil War Medical Museum | March 10 2026, 15:59

Today a big interesting historical post.

Where I was: Historical Museum of Military (Civil War) Medicine in Frederick, MD. Entry is $9, $15 with a guide. For an hour and a half, we got a very smart guy who gave an interesting lecture, making the provincial museum really very interesting. We even tipped the guy afterward.

A few interesting facts that I didn’t know before. During the Civil War in the USA (1861-1865), there was a monstrous scale of losses – over 600,000 people. One in every ten was mobilized for the war. That is, excluding women, children, and the disabled – yes, someone from almost every family fought.

Apparently, Americans were not very experienced in wars back then, and organizing large groups of people was based on the “fend for yourself” principle. From gastrointestinal diseases alone, nearly four times more people died than from wounds. Soldiers cooked everything themselves – there was no cook or porridge for the platoon. They split into micro-groups of a few people, pooled whatever they had, and fried it on a fire. For some reason they mainly fried, not boiled (which also contributed to diseases). Their main rations were salt pork and hard-tack — crackers as hard as a stone. Fried hard-tacks were called Skillygalee.

Remember, it was not like that in European wars. And all because there were many of them, and they quickly figured out how to make them more effective. Plus, there was also a civil war, poorly organized and spontaneous.

Initially, soldiers were handed money in the field and they sent it to their families as best they could (not all reached its destination). For Southerners, money devalued faster than they could carry it to the tent. Back then, each state issued its own money. They write about 8000 different banknotes at that time. I didn’t quite believe it, started researching, and it turned out that this is still a very conservative estimate. Yes, anyone (state, city, private bank, railway, factory, and even a pharmacy) could print their own paper money. Each bank issued banknotes of its own design for different denominations ($1, $2, $3, $5, etc.). In 1860, there were about 1600 private banks in the USA, and almost each issued its own range of notes. But in the end, greenbacks – federal money prevailed.

They also told us about Dorothea Dix, the head of army nurses for the Union. She introduced an interesting age standard for the nurses. No “young and beautiful.” Only women over 30 years of age, “plain-looking,” no jewelry, fashionable dresses, or crinolines – only strict brown or black dresses. At that time, the appearance of a woman in a male military camp was considered almost indecent. Dorothea wanted the soldiers to see in the nurses strict mothers or aunts, not objects of flirtation.

To join the army, a volunteer was required to have at least two teeth opposing each other. Why? A soldier needed to quickly bite off the tip of a paper cartridge to pour the powder into the barrel. No teeth — you’re useless in battle.

Back then, they shot with Minié balls – made of soft lead. It was huge caliber (thumb-sized) and when it hit the body, it didn’t just pass through, it “burst” and literally turned bone into fine crumble. Repairing such a bone was impossible, so amputation became the only way to save a person from gangrene. At least there was some form of anesthesia (chloroform/ether).

Before the Civil War in the USA, people were buried where they died. But the war generated a demand: affluent Northern families wanted to bring their sons’ bodies home. That’s when embalming flourished. Right behind the front line were tents of “embalming surgeons” who for a decent sum (about $50–$100 for an officer) extracted blood and injected chemicals (arsenic and zinc) into the body. Actually, the museum building included such a place. Lincoln’s body after his assassination was transported across the entire country on a train, and it looked “alive” thanks to this new technology, which became the best advertisement for the new industry.

Overall, Frederick is a very nice city, full of art and nonconformists 🙂 Like our Leesburg, but 20 times bigger.

P.S. It was interesting to study what drove people to go die. Of course, our guide said “patriotism”.

But if you google, it turns out not quite so. Of course, in 1861 no one knew that the war would last 4 years and take 600,000 lives.

Reason #1 – boredom. Life on a farm in the mid-19th century was incredibly monotonous. War seemed like the greatest adventure in life. Guys thought: “I’ll go, see the world, shoot, become a hero, and then return to harvest.”

Reason #2 – naivety. The first volunteers went to the front as if on a picnic. In the first major battle (Bull Run), civilians from Washington even came with picnic baskets to watch the “spectacle,” until they were swept away by the retreating crowd of bloodied soldiers.

Reason #3 – “honor.” In the 19th century, “honor” was not an empty word. If you were a healthy guy and didn’t go to the army, you became an outcast in your own town. It’s written that girls often refused to go out with those who didn’t wear a uniform.

Reason #4 – “regimental solidarity.” As I already said, regiments were formed from neighbors. Not going to war meant betraying your friends, brothers, and father. Shame before neighbors was stronger than the fear of death.

What did they fight for?

Here the goals of the North and South radically differed:

For the North, the main idea was “Integrity of the Union.” For them, the USA was a great experiment in democracy that could not be allowed to fail. The slogan “Save the Union” was more powerful than “Free the Slaves.” At first, not everyone was ready to die for abolition of slavery.

For the South (Confederacy), the main motivation was “Defending their homes.” Most Southern soldiers did not own slaves (slavery was too expensive a luxury for ordinary farmers). But they were convinced that the “Yankee northerners” were coming to seize their land, burn their homes, and impose their rules. They saw themselves as heirs of Washington, fighting against “tyrant” Lincoln.

Reason #5 – bounties

When initial enthusiasm faded (by 1863), pure calculation played its part. States and the federal government started paying huge “enlistment bounties.” A sum of $500–$1000 was equivalent to a few years’ earnings for a laborer. For a poor immigrant (Irish or German) just off the boat in New York, it was a chance to provide for a family or buy a farm after the war.

In 1862-63, both sides introduced the draft, as volunteers were running out. This exposed social injustice.

In the North, you could officially avoid the army by paying $300 (huge money for a poor man, but manageable for the middle class) or find a “substitute” (a person who would fight in your place for money).

In the South, there was the “Twenty Negro Law.” Owning 20 or more slaves exempted you from service, as you were “needed in the rear for production control.”

This caused fierce resentment among ordinary soldiers. The famous “Draft Riots” in New York (1863) were sparked precisely by this sense of injustice.

So there you have it 🙂

Global Flavors Tour: Dining Around the World from A to Z | March 09 2026, 00:27

I’ve come up with an interesting project for 2026. Every time we go out to eat, we’ll choose a restaurant from some exotic country, preparing a bit to understand what you’re ordering. I live near Washington, DC, and here there are restaurants from almost all world cuisines (you can’t try Belarusian draniki and drochena, though). Let’s start with the letter A!

Afghan cuisine. Visited Mazako Afghan Eatery.

We had the Kabul pilaf (Qabuli Palau). The rice here is long-grain, very crumbly and sweetened with caramelized carrots and raisins. With sumac. Delicious! For $14. We took mantu. Relatives of our dumplings, but with an Afghan twist. The main difference is the sauces. They are topped with thick yogurt (chaka) with garlic and dried mint, as well as a meat sauce made from yellow peas. Very tasty chicken kebab (Chicken Kebob). Afghans are masters of marinade. They marinate the chicken in yogurt with lemon and saffron, making it very tender. We took Doogh – a refreshing drink based on yogurt, water, salt, and, theoretically, a large amount of dried mint (though we didn’t find the mint, it might just be hiding) and finely chopped cucumbers. It seems too salty at first, but it’s still okay.

Total pilaf+chicken kebab+doogh+mantu plus 20% tip = $54. And it’s very delicious (and filling).

Actually, yesterday we also visited some fancy Thai restaurant in our town, but it didn’t quite hit the spot, so let’s pretend it didn’t exist.

#ethnicdiningdcmetro