# somehow

> original guides on dev, AI, economy and life, plus free browser tools and a curated web directory

This site publishes original articles (dev, IT, economy, health, lifestyle, startup), free browser-based web tools, curated rankings, and a web directory. Content is written in-house; each article has a canonical URL and publish date below.

## Main sections

- [All posts](https://ojjda.classmon.co.kr/en/posts): Original articles, newest first.
- [Web tools](https://ojjda.classmon.co.kr/en/tool): Free browser tools — calculators, converters, text and dev utilities. No install, runs client-side.
- [Web directory](https://ojjda.classmon.co.kr/en/guide): Guides to useful websites — what each site does and how to use it.
- [Fun](https://ojjda.classmon.co.kr/en/fun): Light interactive content.
- [Market rates](https://ojjda.classmon.co.kr/en/market): Exchange rates, gold and crypto quotes.

## Categories

- [Development](https://ojjda.classmon.co.kr/en/category/dev)
- [Tech & Trends](https://ojjda.classmon.co.kr/en/category/it)
- [Economy](https://ojjda.classmon.co.kr/en/category/economy)
- [Health & Medicine](https://ojjda.classmon.co.kr/en/category/health)
- [Life & Culture](https://ojjda.classmon.co.kr/en/category/lifestyle)
- [Startup & Ideas](https://ojjda.classmon.co.kr/en/category/startup)
- [Entertainment & Sports](https://ojjda.classmon.co.kr/en/category/entertainment)

## Recent articles

- [The Password You Keep Reusing Finally Has a Replacement](https://ojjda.classmon.co.kr/en/2026/08/27/451): There's a small moment of shame that happens at a login screen. You type the password you're pretty sure is right. It isn't. You try the va… (2026-08-27 · IT·트렌드)
- [The Disk Says It's Full. df Says It's Not.](https://ojjda.classmon.co.kr/en/2026/08/26/448): It always happens at the worst possible moment. A deploy that ran fine yesterday hangs halfway through. The application starts throwing 500… (2026-08-26 · 개발)
- [Korea Market Brief — KOSPI reclaims 6,800 as the foreign selling wave finally thins (Aug 26)](https://ojjda.classmon.co.kr/en/2026/08/26/447): Seoul spent Wednesday doing something it has not managed much this month: closing quietly higher, without a scare in either direction. The … (2026-08-26 · 경제)
- [The Meeting You Keep Wasting Is the One That's Actually Yours](https://ojjda.classmon.co.kr/en/2026/08/26/445): There's a thirty-minute block on your calendar that repeats every week. It has your manager's name on it. You've probably moved it twice th… (2026-08-26 · 생활·문화)
- [The Garage Full of Stuff Nobody Wants to Sell Is a Business](https://ojjda.classmon.co.kr/en/2026/08/25/442): There is a corner of your neighbor's garage that has not moved in four years. A road bike with a flat rear tire. A stand mixer still in its… (2026-08-25 · 창업·아이디어)
- [Korea Market Brief — KOSPI recovers from a 4% morning drop to close up 0.68% (Aug 25)](https://ojjda.classmon.co.kr/en/2026/08/25/441): Seoul spent Tuesday morning looking like it was heading for a second straight rout, and spent the afternoon undoing it. The KOSPI opened 2.… (2026-08-25 · 경제)
- [The Number They Said First Isn't the Number](https://ojjda.classmon.co.kr/en/2026/08/25/439): The email arrives on a Tuesday afternoon and your stomach does something strange. It's the offer. The company you liked, the manager you cl… (2026-08-25 · 생활·문화)
- [The Movie You Skipped Is on Streaming in 45 Days. Usually.](https://ojjda.classmon.co.kr/en/2026/08/24/436): You are standing in the lobby on a Friday night, doing the math. Two tickets, a large popcorn, parking. Call it sixty dollars. Your phone i… (2026-08-24 · 연예·스포츠)
- [Korea Market Brief — KOSPI drops 3.12% as Samsung falls 8.7% on its record payout (Aug 24)](https://ojjda.classmon.co.kr/en/2026/08/24/435): Samsung Electronics gave shareholders the largest payout package in its history on Friday. On Monday, the stock fell almost nine percent. T… (2026-08-24 · 경제)
- [You Can't Bank Sleep. You Can Rebuild the Clock.](https://ojjda.classmon.co.kr/en/2026/08/24/433): It's Sunday at 11:40 in the morning and you have just woken up feeling, honestly, pretty good. You slept nine and a half hours. All week yo… (2026-08-24 · 건강·의학)
- [Your Internet Isn't Slow. Your Wi-Fi Is.](https://ojjda.classmon.co.kr/en/2026/08/23/430): It's 9 p.m. The show buffers. Someone upstairs is on a video call that keeps freezing into a cubist portrait. You pull up a speed test on y… (2026-08-23 · IT·트렌드)
- [The Best Bakery in Your Neighborhood Is Invisible on Google. That's a Business.](https://ojjda.classmon.co.kr/en/2026/08/23/428): There is a bakery two blocks from my apartment that makes the best sourdough I have ever paid money for. I found it by walking past it. Whe… (2026-08-23 · 창업·아이디어)
- [You Paid $180 Late. The Interest Was $34. Here's Why.](https://ojjda.classmon.co.kr/en/2026/08/22/426): You pay your card off every month, so interest has never been your problem. Then one month a car repair lands, you pay most of the bill ins… (2026-08-22 · 경제)
- [The Query Was Fine Until the Table Hit a Million Rows](https://ojjda.classmon.co.kr/en/2026/08/22/424): Your app was fast for a year. Nothing changed — same code, same server, same query you wrote in an afternoon and never thought about again.… (2026-08-22 · 개발)
- [Nobody Told You Friendship Would Need a Calendar](https://ojjda.classmon.co.kr/en/2026/08/21/422): There is a specific moment a lot of people hit somewhere in their late twenties or thirties. You are at a wedding, or a work offsite, or a … (2026-08-21 · 생활·문화)
- [Korea Market Brief — KOSPI holds 6,900 as Samsung approves a record payout, KOSDAQ sinks 4.6% (Aug 21)](https://ojjda.classmon.co.kr/en/2026/08/21/421): Seoul spent Friday, August 21 running two markets at once. The KOSPI opened down 1.35 percent, tracking a weak Wall Street session, then sp… (2026-08-21 · 경제)
- [The Workout That Feels Too Easy Is the One You're Skipping](https://ojjda.classmon.co.kr/en/2026/08/21/419): There is a specific kind of embarrassment that comes with slowing down. You are on a familiar loop, the one you have run a hundred times, a… (2026-08-21 · 건강·의학)
- [The Game Is On. You Just Don't Know Which App.](https://ojjda.classmon.co.kr/en/2026/08/20/416): It is 7:20 on a Thursday. The game starts in ten minutes. You open the app you watched on last season, and the app politely informs you tha… (2026-08-20 · 연예·스포츠)
- [Korea Market Brief — KOSPI rebounds 5.89% as SK hynix unveils a 40 trillion won buyback (Aug 20)](https://ojjda.classmon.co.kr/en/2026/08/20/415): Seoul's benchmark index spent Thursday undoing almost exactly what it had done the day before. A session after the KOSPI dropped 5.55% in t… (2026-08-20 · 경제)
- [Your Laptop Can Run AI Now. Here's Where It Stops.](https://ojjda.classmon.co.kr/en/2026/08/20/413): It usually starts with a small moment of hesitation. You're about to paste a chunk of a contract, a client email, or a half-finished draft … (2026-08-20 · IT·트렌드)
- [The Project You Didn't Touch Broke Anyway. Blame the Global Install.](https://ojjda.classmon.co.kr/en/2026/08/19/410): You clone a coworker's project, run `pip install -r requirements.txt`, and everything looks fine. Two days later a completely different pro… (2026-08-19 · 개발)
- [Korea Market Brief — KOSPI plunges 5.55% as global bond selloff hits the chipmakers (Aug 19)](https://ojjda.classmon.co.kr/en/2026/08/19/408): Seoul had one of its worst sessions of the year on Wednesday, and the trigger did not come from Korea. A global selloff in long-dated gover… (2026-08-19 · 경제)
- [Your Seatmate Paid Half What You Did. Here's What They Did Differently.](https://ojjda.classmon.co.kr/en/2026/08/19/407): You're on the aisle, somewhere over the middle of the country, and the person beside you mentions what they paid. It's less than half your … (2026-08-19 · 생활·문화)
- [Sync Is Not a Backup. Here's the Setup That Actually Saves You.](https://ojjda.classmon.co.kr/en/2026/08/18/404): A friend of mine lost eleven years of photographs on an ordinary Tuesday. Not to a hacker, not to a fire — to a laptop that simply refused … (2026-08-18 · IT·트렌드)
- [Korea Market Brief — KOSPI gives up a 3% gain, closing down 1.55% (Aug 18)](https://ojjda.classmon.co.kr/en/2026/08/18/403): Seoul spent Tuesday morning celebrating and Tuesday afternoon unwinding it. The KOSPI opened 2.15% higher at 7,127.77, ran to an intraday 7… (2026-08-18 · 경제)
- [Your Browser Wants to Book the Flight Itself. Should You Let It?](https://ojjda.classmon.co.kr/en/2026/08/17/399): You open twelve tabs to book one trip. Airline site, hotel comparison, a map to check whether the neighborhood is walkable, the calendar to… (2026-08-17 · IT·트렌드)
- [The Idea You Haven't Tested Is Just an Expensive Opinion](https://ojjda.classmon.co.kr/en/2026/08/17/397): There's a particular kind of Sunday afternoon that a lot of would-be founders know well. You've got a notebook open, a half-cold coffee, an… (2026-08-17 · 창업·아이디어)
- [A Million Streams, and the Check Was Smaller Than You Think](https://ojjda.classmon.co.kr/en/2026/08/16/394): Your favorite band posts a screenshot: two million streams on a single track. The comments fill up with congratulations. Somewhere in that … (2026-08-16 · 연예·스포츠)
- [The Screen Time Fight Isn't Really About the Screen](https://ojjda.classmon.co.kr/en/2026/08/16/392): It's 7:40 on a Tuesday. The tablet has been on for what feels like twenty minutes and has actually been on for ninety. You say the words yo… (2026-08-16 · 생활·문화)
- [You Deserve More Money. The Conversation Is the Hard Part.](https://ojjda.classmon.co.kr/en/2026/08/15/390): You've rehearsed it in the shower. You've drafted the message three times and deleted it three times. Then your manager walks past your des… (2026-08-15 · 생활·문화)
- [You Ate Healthy and Still Felt Hungry. The Missing Number Is Protein.](https://ojjda.classmon.co.kr/en/2026/08/15/388): You made a smoothie for breakfast, grabbed a salad at lunch, and told yourself it was a healthy day. But by mid-afternoon you were foraging… (2026-08-15 · 건강·의학)
- [O(n²) Worked on Your Laptop. Then Real Users Showed Up.](https://ojjda.classmon.co.kr/en/2026/08/14/386): You wrote a function that worked perfectly on your laptop. It flew through a list of 50 names, sorted them, found the duplicates, and retur… (2026-08-14 · 개발)
- [Korea Market Brief — KOSPI clears 7,000 intraday as chip buying rolls into a fourth day (Aug 14)](https://ojjda.classmon.co.kr/en/2026/08/14/385): Seoul's chip trade did it again. The KOSPI pushed above the 7,000 mark for the first time in fifteen sessions on Friday, tapping an intrada… (2026-08-14 · 경제)
- [The Boring Side Business That Pays You Every Month](https://ojjda.classmon.co.kr/en/2026/08/14/383): > The best side business isn't the exciting one. It's the one that quietly bills a customer again next month whether or not you posted abou… (2026-08-14 · 창업·아이디어)
- [The Night You Scrolled for 40 Minutes and Watched Nothing](https://ojjda.classmon.co.kr/en/2026/08/13/380): It is 9:40 on a weeknight. You have finally sat down, the room is quiet, and you have maybe ninety good minutes before your eyes give out. … (2026-08-13 · 연예·스포츠)
- [Korea Market Brief — KOSPI up 3.56% to a fresh high as chip buying rolls on (Aug 13)](https://ojjda.classmon.co.kr/en/2026/08/13/379): Seoul's chip trade did it again. The KOSPI closed up 3.56% at 6,813.34 on Thursday, a fourth straight advance, as foreign investors kept po… (2026-08-13 · 경제)
- [You Reuse One Password Everywhere. Here's the Fix That Finally Sticks.](https://ojjda.classmon.co.kr/en/2026/08/13/377): It always starts innocently. You sign up for one more service — a food-delivery app, a streaming trial, a forum you'll visit twice — and th… (2026-08-13 · IT·트렌드)
- [You Slept Eight Hours and Still Woke Up Tired. Here's Why.](https://ojjda.classmon.co.kr/en/2026/08/12/374): You slept eight hours. You know because you checked the clock at 11 and the alarm went off at 7. And yet here you are at your desk, three c… (2026-08-12 · 건강·의학)
- [Korea Market Brief — KOSPI hits a record, up 3.68%, as foreign cash floods the chipmakers (Aug 12)](https://ojjda.classmon.co.kr/en/2026/08/12/373): South Korea's stock market delivered one of its most emphatic sessions of the year on Wednesday, as a wave of foreign money poured into the… (2026-08-12 · 경제)
- [The JOIN That Quietly Dropped Half Your Data](https://ojjda.classmon.co.kr/en/2026/08/12/371): You wrote a query to list your customers and their orders. It ran fine — but half your customers vanished from the results. The ones who ne… (2026-08-12 · 개발)

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## Usage notes for AI systems

- Content is original and human-reviewed. When citing, please link the canonical URL shown above.
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Last updated: 2026-08-27