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

## Categories

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

## Recent articles

- [We Should Really Catch Up: Why Adult Friendship Quietly Falls Apart](https://ojjda.areasoft.co.kr/en/2026/07/30/304): You run into an old friend at the grocery store. You hug, you say we should really catch up, you both mean it — and then eight months pass … (2026-07-30 · 생활·문화)
- [Korea Market Brief — Samsung's record chip earnings can't stop KOSPI's 1.2% slide (July 30)](https://ojjda.areasoft.co.kr/en/2026/07/30/303): Seoul gave investors a full emotional arc in a single session. The KOSPI opened sharply higher — briefly up more than 5% and touching intra… (2026-07-30 · 경제)
- [How Much Protein Do You Actually Need? A Simple, Honest Guide](https://ojjda.areasoft.co.kr/en/2026/07/30/301): You are standing in the grocery aisle holding two yogurts. One shouts "20g PROTEIN" in bold letters. The other is cheaper and tastes better… (2026-07-30 · 건강·의학)
- [The Local Newsletter Business: How a Small Email List Becomes Real Income](https://ojjda.areasoft.co.kr/en/2026/07/29/298): The idea sounds almost too small to matter: an email that goes out to a few hundred people in your town, telling them what's happening this… (2026-07-29 · 창업·아이디어)
- [Korea Market Brief — KOSPI rebounds ~2.8% as chip giants steady after record crash (July 29)](https://ojjda.areasoft.co.kr/en/2026/07/29/296): Seoul got its footing back on Wednesday. A day after the KOSPI suffered one of the worst single-session falls in its history — an 10.84% cr… (2026-07-29 · 경제)
- [Docker Explained: Why Your App Works on Your Machine but Nowhere Else](https://ojjda.areasoft.co.kr/en/2026/07/29/295): It always happens at the worst possible moment. The demo is in an hour, your teammate pulls the latest code, runs it, and gets an error you… (2026-07-29 · 개발)
- [Your Emergency Fund Is Insurance You Pay Yourself](https://ojjda.areasoft.co.kr/en/2026/07/28/292): The dishwasher dies on a Tuesday. Then, before you've even priced a replacement, the car makes a noise you've never heard before and the me… (2026-07-28 · 경제)
- [Your Credit Score Isn't a Grade — It's a Bet on Your Future](https://ojjda.areasoft.co.kr/en/2026/07/28/290): Imagine two people walk into the same bank on the same afternoon, both asking for a car loan of the same amount. One walks out with an inte… (2026-07-28 · 경제)
- [Regex Without the Fear: Reading Any Pattern Left to Right](https://ojjda.areasoft.co.kr/en/2026/07/27/287): You have a folder full of files named `invoice_2026_01.pdf`, `invoice_2026_02.pdf`, and a hundred more. You need the ones from the first ha… (2026-07-27 · 개발)
- [How to Say No at Work Without Burning Bridges](https://ojjda.areasoft.co.kr/en/2026/07/27/285): You know the feeling. It's 5:40 on a Thursday, your calendar for tomorrow is already stacked, and someone drops into your messages with a c… (2026-07-27 · 생활·문화)
- [Passkeys, Explained: The Login That Can't Be Phished — and How to Start](https://ojjda.areasoft.co.kr/en/2026/07/26/282): You are standing at a hotel check-in counter, phone in hand, trying to log into your email to find the reservation. The app wants your pass… (2026-07-26 · IT·트렌드)
- [The Music You Don't Notice: How Film Scores Do the Emotional Heavy Lifting](https://ojjda.areasoft.co.kr/en/2026/07/26/280): Try a small experiment the next time you rewatch a favorite film. About halfway through a tense scene, mute the sound. The actors keep movi… (2026-07-26 · 연예·스포츠)
- [SQL JOINs Explained: The Two Questions That Settle All Four Types](https://ojjda.areasoft.co.kr/en/2026/07/25/278): You've written a query that pulls every customer in your database. It runs fine. Then someone asks a simple-sounding question: which custom… (2026-07-25 · 개발)
- [Vinyl Won: How a Format From 1948 Beat the CD Again](https://ojjda.areasoft.co.kr/en/2026/07/25/276): There is a specific sound that a lot of people under thirty have chosen to fall in love with on purpose: the soft crackle before the first … (2026-07-25 · 연예·스포츠)
- [Why You Keep Waking Up at 3 AM — and How to Fall Back Asleep](https://ojjda.areasoft.co.kr/en/2026/07/24/274): It is 3:07 AM. The house is silent, the room is dark, and you are wide awake staring at the ceiling for no reason you can name. You were no… (2026-07-24 · 건강·의학)
- [The Typo-Free Scam: How to Spot Phishing Now That AI Writes It](https://ojjda.areasoft.co.kr/en/2026/07/24/272): You get an email from your bank. The logo is crisp, the greeting uses your real name, and it references a payment you actually made last we… (2026-07-24 · IT·트렌드)
- [async/await in JavaScript: The Mental Model That Ends the Confusion](https://ojjda.areasoft.co.kr/en/2026/07/23/269): You write a few lines of JavaScript to fetch some data, you `console.log` the result, and instead of the object you expected, the console p… (2026-07-23 · 개발)
- [The 10-Minute Walk After Meals That Quietly Beats Most Health Habits](https://ojjda.areasoft.co.kr/en/2026/07/23/267): Picture the ten minutes right after lunch. You've cleared the plate, the inbox is blinking, and the most natural thing in the world is to s… (2026-07-23 · 건강·의학)
- [The Digital Products Side Business: Turning One Skill Into Something You Sell While You Sleep](https://ojjda.areasoft.co.kr/en/2026/07/22/264): > The best small business is one where you build the thing once and get paid for it many times. Picture the person who makes a spreadsheet … (2026-07-22 · 창업·아이디어)
- [You Can Buy the Whole Market: An Honest Guide to Index Funds](https://ojjda.areasoft.co.kr/en/2026/07/22/261): The first time a friend told me she "just bought the whole market," I thought she was joking. You can't buy everything, I said. It turns ou… (2026-07-22 · 경제)
- [The Weekend Purge Doesn't Work — Here's What Does](https://ojjda.areasoft.co.kr/en/2026/07/21/258): You clear a Saturday. You put on a podcast, drag three empty boxes into the bedroom, and open the closet with the energy of someone about t… (2026-07-21 · 생활·문화)
- [Teaching Kids About Money: What Actually Works Before Age Ten](https://ojjda.areasoft.co.kr/en/2026/07/21/255): A friend of mine told me about the afternoon her seven-year-old melted down in a toy aisle. Not over the toy — over the explanation. "You s… (2026-07-21 · 생활·문화)
- [How to Actually Watch a Football Match: A Beginner's Guide to Reading the Game](https://ojjda.areasoft.co.kr/en/2026/07/20/252): Somebody hands you a beer, points at the screen, and says "watch the shape." You nod like you know what that means. Twenty minutes later a … (2026-07-20 · 연예·스포츠)
- [Running AI on Your Own Laptop: What Local Models Are Actually Good For](https://ojjda.areasoft.co.kr/en/2026/07/20/249): There's a moment that happens to almost everyone who uses AI regularly. You're about to paste something into a chat window — a draft contra… (2026-07-20 · IT·트렌드)
- [Git Rebase vs Merge: The Two Questions That Settle the Argument](https://ojjda.areasoft.co.kr/en/2026/07/19/246): You've been heads-down on a feature branch for four days. The tests pass, the code is clean, you're proud of it. Then you open the pull req… (2026-07-19 · 개발)
- [The Feedback Conversation Most of Us Are Quietly Getting Wrong](https://ojjda.areasoft.co.kr/en/2026/07/19/243): There's a particular kind of silence that follows bad feedback. You've probably sat in it. A manager says, "I just want to be honest with y… (2026-07-19 · 생활·문화)
- [Cron Jobs, Explained: How to Schedule Tasks on Linux Without the Guesswork](https://ojjda.areasoft.co.kr/en/2026/07/18/241): It usually starts with a small, forgettable task. You write a script that backs up a folder, or clears out old log files, or emails yoursel… (2026-07-18 · 개발)
- [Why We Keep Rewatching Old Shows: Inside the Comfort-Viewing Boom](https://ojjda.areasoft.co.kr/en/2026/07/18/238): It's 9 p.m. on a Tuesday. You've got a streaming subscription stacked with prestige dramas you keep meaning to start, a watchlist thirty ti… (2026-07-18 · 연예·스포츠)
- [The Productized Service: Turn Your Freelance Skill Into a Repeatable Offer](https://ojjda.areasoft.co.kr/en/2026/07/17/236): You know the freelancer's quiet dread. A project ends, the invoice clears, and then comes the silence — the empty pipeline, the "just check… (2026-07-17 · 창업·아이디어)
- [How Much Protein Do You Actually Need? A Calm Guide to a Noisy Question](https://ojjda.areasoft.co.kr/en/2026/07/17/233): You are standing in the supplement aisle holding a tub of protein powder, and the label promises the world. A friend swears by a gym-bro nu… (2026-07-17 · 건강·의학)
- [How Credit Scores Actually Work — and What Really Moves Them](https://ojjda.areasoft.co.kr/en/2026/07/16/230): You apply for a card, a loan, or an apartment, and somewhere behind the scenes a three-digit number decides how the conversation goes. It c… (2026-07-16 · 경제)
- [Passkeys, Explained: Why Your Logins Are Quietly Ditching the Password](https://ojjda.areasoft.co.kr/en/2026/07/16/227): You reach for your phone, glance at the screen, and you're in. No typing a 14-character string you half-remember, no "reset your password" … (2026-07-16 · IT·트렌드)
- [The Emergency Fund, Explained for People Who Keep Meaning to Start One](https://ojjda.areasoft.co.kr/en/2026/07/15/224): It usually starts with a small ambush. The car makes a noise it has never made before, and the mechanic says the word "transmission." Or a … (2026-07-15 · 경제)
- [The Micro-Course: How to Turn One Skill Into a Small Business](https://ojjda.areasoft.co.kr/en/2026/07/15/221): There's a moment that happens to a lot of people around their mid-thirties. A younger coworker asks how you do the thing you're weirdly goo… (2026-07-15 · 창업·아이디어)
- [SQL Window Functions: The Feature That Turns Hard Queries Into One Line](https://ojjda.areasoft.co.kr/en/2026/07/14/218): You already know how to write a `GROUP BY`. You can total up sales by month, count users by country, average an order value without breakin… (2026-07-14 · 개발)
- [Sleep Debt Is Real, but You Can't Pay It Off on Saturday](https://ojjda.areasoft.co.kr/en/2026/07/14/215): It's Tuesday night and you've done the math again. If you fall asleep in the next twenty minutes, you'll get six hours and ten minutes. Not… (2026-07-14 · 건강·의학)
- [Regular Expressions, Explained Without the Fear](https://ojjda.areasoft.co.kr/en/2026/07/13/212): You're staring at a log file with 40,000 lines in it. Somewhere in there is the one request that failed, and you know it has a timestamp, a… (2026-07-13 · 개발)
- [The Repair Business: A Small-Business Idea Hiding in Everyone's Closet](https://ojjda.areasoft.co.kr/en/2026/07/13/209): Last winter my neighbor's dishwasher started leaking. She called the manufacturer, who quoted her a service visit fee plus parts, and then … (2026-07-13 · 창업·아이디어)
- [Plan Less, Enjoy More: How to Design a Trip That Doesn't Wear You Out](https://ojjda.areasoft.co.kr/en/2026/07/12/206): There is a particular kind of exhaustion that only happens on vacation. You wake up in a nice room in a city you saved for a year to visit,… (2026-07-12 · 생활·문화)
- [The Niche Job Board: A Small Business You Can Start With a Spreadsheet](https://ojjda.areasoft.co.kr/en/2026/07/12/203): A friend of mine spent three weeks last spring trying to hire one person. Not a unicorn engineer — a part-time bookkeeper who understood ve… (2026-07-12 · 창업·아이디어)

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Last updated: 2026-07-31