Where planning meets engineering.
Mostly the “why” and “when” of a concept. We rarely go all the way down to the code.
116 posts
Raising Deposit and Rent Together in Korea — The Statute Says Per-Item, Not Combined
When a Korean landlord wants to raise both the deposit and the monthly rent at renewal, how is the 5 percent cap measured? The statute and the government commentary both read per item: 5 percent of the deposit, 5 percent of the rent. The popular combined-conversion method has no basis I could find in law, and it quietly lets rent rise by 9 percent.
Rental Registration Cancellation and Capital Gains Tax in Korea — A Sale Deadline Just Appeared
Apartments whose rental registration lapsed automatically used to face no deadline for selling. An Income Tax Act Enforcement Decree amendment dated 30 September 2026 put one in: 31 December 2027. The heavy-tax exclusion, the primary residence exemption, and the long-term holding deduction now run on three different clocks.
How Commercial Lease Conversion Differs From Housing in Korea — A 12 Percent Ceiling and a Threshold
Converting a commercial deposit into monthly rent in Korea is capped at 12 percent a year, not the 5 percent that applies to housing. Housing adds 2 percentage points to the base rate; commercial multiplies it by 4.5. And once the converted deposit passes a regional threshold, neither that ceiling nor the 5 percent increase limit applies at all.
Can Blind Customers Actually Give E-Consent? Screen Reader Accessibility on a Page That Read Checked Boxes as "Not Checked"
Is electronic consent done once the customer checks and signs on screen? For a blind customer listening through a screen reader, a checked item could still be read as "not checked." Here are four problems an accessibility tree audit found on a mobile e-contract page that had already been fixed once, and how I fixed them without touching server code.
Consent Record Retention for Electronic Consent — What ISMS-P Checks, and Snapshotting the Wording Customers Saw
What should a consent record contain, how long should you keep it, and in what form? This post starts with the record items and retention period required by Korea's ISMS-P criterion 3.1.1, plus the evidence and defect cases auditors look at, then walks through a snapshot approach that keeps not just the outcome but the exact wording customers saw.
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Identity Verification vs Electronic Signature in Korea — SMS Codes, PASS and Kakao Signing, and How Far Each Goes in an E-Contract
How does the 6-digit code you get by text differ from an electronic signature made with PASS, Naver, or Kakao? This post sorts out identity verification vs electronic signature under Korean law, then uses examples to separate e-contracts where identity verification is enough, where you need an electronic signature, and where even an electronic signature won't work. It also covers how to guide elderly customers through the process.
Why AI-Edited .js Files Switch to CRLF Line Endings — When BOM and LF Break, Tested
A .js file that had been BOM + LF for months came back as CRLF after I asked an AI to change one line. The culprit wasn't the AI — it was the path the AI used to save the file. I edited the same file 13 different ways and traced how 24 files flipped in a real repository.
Your First Planning Role — Settling Roles and Responsibilities Before You Pick a Tool
Someone newly handed a planning role on the business side, working with engineering, sent me seven questions. History tracking, progress tracking, request intake, role boundaries. Each looked like a different question, but read together they were all asking the same thing. Here are three things — intake, judgment, record — and why the tool should come last.
In the AI Era, How a Business Spec, a Requirements Document, and Engineering's Own Planning Differ
Specs aren't written only by the business side. Their planning serves marketing and sales; engineering does its own planning for implementation. Here's what an AI mockup settles, what it leaves blank, the stage that stays invisible to one side, and a five-stage split of responsibilities.
Ten Minutes Before, Ten Minutes After — AI Meeting Prep and Sharing Notes
The quality of meeting notes is decided before the meeting starts, not after it ends. How to feed context to AI in the ten minutes before, how to share by audience in the ten minutes after, and why you shouldn't react on the spot when a meeting makes you angry.
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Forty Lines and I Still Don't Know What You Want — Work Email Etiquette for Requests and Replies
Some emails have perfect attachments and still leave you asking what exactly you're supposed to do. Put the ask first and the background last, and when a reply is going to be late, send the lateness before the reply. Work email etiquette from both ends.
ISMS vs ISMS-P in Korea — There Is No Such Thing as an "ISMS-P Obligation" (Yet)
Search results are full of the phrase 'ISMS-P obligation,' but Korean law mandates only ISMS. Here is how the two certifications split from one scheme, the structure of the 101 controls, why the confusion took hold, and why the phrase may become real in 2027.
Korea's ISMS-P When You're Not Required — Three Signs to Get It, Three Signs to Wait
If the obligation checker says you're not required to certify, the next question is whether to do it anyway. What Korea's voluntary ISMS-P certification actually buys, what it costs, and six signals that tell you which side your company is on.
You're Subject to Korea's Mandatory ISMS — The First 90 Days, Counted Backward from August 31
Under South Korea's Network Act, companies that cross certain revenue or user thresholds must obtain ISMS certification by August 31 of the following year. Here is how to count the schedule backward from that deadline, what to do in the first 90 days, and what changed in the 2026 reform.
The Gemini CLI Shutdown — The Day I Learned AI Tools Have Expiry Dates
Google grew Gemini CLI as open source, then closed it to individual accounts on June 18 and replaced it with Antigravity CLI. Here are the three reasons the community was angry — and the three things anyone using AI tools should keep outside the tool.
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Claude Code Projects Explained — The AI You Talk To Doesn't Have to Do All the Work
If the model you chat with also does all the execution, you've built a company where the manager writes the code. Strategy with Fable, judgment with Opus, loops with Sonnet — the real structure behind a one-person design-system overhaul, and how Claude Code Projects turns it into a product.
What Took Longest in a Solo Developer App Release Wasn’t the Code
AI made building the app fast. Shipping it took a week — and less than half of that was writing code. Notes from releasing a small free PDF tool: the review delays, the fiddly work nobody sees, and the distance between a script and a product.
Next.js + Payload CMS Instead of WordPress — Why Teams Are Switching
WordPress runs a site just fine. Yet new sites — especially ones developers build themselves — increasingly pair Next.js with Payload CMS. Why split content management and the display layer at all? Here’s what Payload CMS is, and when this combo wins and when it doesn’t, explained without code.
You Made the Call but Forgot Why — How to Write a Decision Record
Ever fail to recall six months later why you chose what you chose, and end up re-debating an option you already rejected? The problem isn’t the decision — it’s that the reasoning evaporated. Here’s where, when, and what to put in a decision record, split into team-shared and personal versions.
Swift on Android Is Official Now — So Why Do the Rankings Disagree?
In March 2026, Swift shipped its first official Android SDK. The language that lived inside Apple’s walls started stepping outside. Yet the popularity indexes point in different directions. Here’s what actually happened, and which numbers you can trust.
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Timeouts and a Retry Policy — The Failure Decisions Product Managers Own
The network will fail eventually — that’s a certainty, not an exception. If you don’t decide how long to wait (timeout) and how many times to try again (retry), your service either freezes or causes incidents. Here’s why a retry policy isn’t just an engineering matter but a planning decision, explained without code.
When to Use a Cache — The Trade-off Between Fast and Correct
Can you make this faster?’ The answer is often a cache. But a cache isn’t free — you buy speed and, with it, the risk of showing stale data. Here is when to use a cache and when to avoid one, with the judgment calls a product manager should own, explained without code.
Claude Code for Non-Developers — What a Product Manager Can Actually Do With It
Your developers work in Claude Code — but is it off-limits if you don’t code? Not at all. Here is Claude Code for non-developers, at a level that needs zero code: ask questions of a codebase, draft docs, tidy data, prototype ideas, and automate busywork — five things a product manager can actually do.
What Is MCP — The AI Tool Connection Standard Product Managers Should Know
AI is smart, so why is it blind to your company’s data? This is what is MCP in plain terms — the open standard that connects AI models to external tools and data. No code required: the concept, what changes versus before, and the calls a product manager has to make.
How to Read an API Spec as a Product Manager — Drawing the Same Picture as Developers
When a developer says ‘just check the API spec,’ non-coding PMs freeze. Here is how to read an API spec without writing a line of code — endpoint, request, response, and status codes — so you draw the same picture as your developers and catch gaps early.
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What Is Idempotency? How to Stop Duplicate Payments and Orders
Press the pay button twice — does the customer get charged twice? Idempotency is the concept that prevents this common failure. Here is what it means, how HTTP methods differ, and how an idempotency key stops duplicate payments and orders.
Why Does Changing One Rule Mean a Full Deploy? The Closed-Loop Fix
Changing one rule shouldn’t mean editing code and redeploying every time. Here is how a closed-loop design removes that busywork — three pillars and the trade-offs.
Not Reproducible Bugs — A Four-Step Way to Handle Them Without Closing
QA saw the bug clearly, but it won’t show on the developer’s machine. The ticket gets stamped ‘Not Reproducible’ and quietly disappears — until the same defect comes back from a user. A four-step handling guide that swaps ‘close it’ for ‘park it and watch.
Smoke Testing — Closing the PM and Developer Gap on ‘Did You Test?
On small teams with no dedicated QA, the question ‘Did you test it?’ lands sideways more often than it should. A one-page guide to smoke testing — the definition, the origin, the pipeline, and the e-commerce example — so PMs and developers can stop arguing past each other.
Why Fallback Matters Again in the MSA and AI Era
Fallback is an old idea that has quietly become essential again. Microservices, LLM adoption, and UX pressure made it a default tool — here is why, with examples.
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Fallback Case Studies — 7 Outage Scenarios from Netflix, Spotify, and Kakao
Seven fallback case studies — Netflix, Spotify, Google Maps, YouTube, plus the AWS S3 2017 and Kakao 2022 outages. Same pattern, very different shapes.
From On-Device AI to Hybrid AI — How Routing Defines the Next Two Years
On-device AI is the hot topic right now, but real products are converging on Hybrid AI. Here’s why the on-device wave leads to hybrid, the four routing patterns that make it work, and what builders should focus on next.
The Real AI Meeting Notes Workflow — Beyond the 5-Minute Trap
The real AI meeting notes workflow isn’t about throwing audio at AI after the meeting. It’s about a single shared session of notes that everyone watches and edits while the meeting happens. Here’s the flow.
Claude Opus 4.8 — Dynamic Workflows, Fast Mode, and the Mythos Preview (2026)
Claude Opus 4.8 is Anthropic’s May 28, 2026 flagship release. Dynamic Workflows runs up to 1,000 subagents in a single Claude Code session, Fast Mode brings 2.5× speed at 3× cheaper than prior fast tiers, and benchmarks step up across the board. Here’s what shifts for developers.
After the Blue Origin Explosion — US Space Industry Is Not in Retreat, It Is Returning to Reason
The Blue Origin explosion was not a failed launch. It was an accident on the pad during a pre-launch test. The footage was loud, but the direction of US space is unchanged. NASA Artemis, Amazon Leo, and SpaceX’s June IPO, viewed from an industry-observer angle.
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Gemini Spark — Google I/O 2026’s 24/7 AI Agent and Five Workflows to Hand Off (2026)
Gemini Spark is the 24/7 AI agent Google announced at I/O 2026. Runs in the background across Gmail and Workspace, executes long-running tasks on dedicated Cloud VMs, and reshapes how personal workflow automation gets defined.
Grok Build vs Claude Code vs Codex — A 3-Way Comparison Guide for Developers (2026)
Three terminal AI coding agents — Grok Build, Claude Code, Codex CLI — compared on benchmarks, pricing, Korean-language environment behavior, and which tool fits which job. With a decision table at the end.
Grok May 2026 Updates — Imagine, Connectors, Build CLI, and Skills in One Place
May 2026 was xAI’s busiest month yet. Grok May 2026 updates covered five major releases — Imagine Agent Mode, Connectors, Build CLI, model migration, and Skills — all in one stretch.
Grok Build CLI — Install, Authenticate, and First Run (2026 Guide)
Grok Build CLI is xAI’s terminal-based AI coding agent, launched May 14, 2026. Here’s the install command, auth options, first run modes, and how Grok Build CLI compares with Claude Code and Codex on attachments.
Email-Savvy People — Five Habits of the One-Line Reply
Email-savvy people aren’t the ones writing the longest, most polite emails. They’re the ones giving the receiver 30 seconds back. Five habits behind the one-line reply.
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VS Code AI Tools — A Bridge Guide for Newcomers Moving from Web AI
VS Code AI tools work differently from web AI. This bridge guide explains the shift in working style, where Claude/Gemini/Codex each fit, and why Gemini hits a wall on images and PDFs inside the IDE.
Meeting-Savvy People — Five Habits Only the Person Taking Notes Sees
Meeting-savvy people aren’t the ones who talk the most. They’re the ones who keep the meeting from leaking — five habits visible only from the note-taking chair.
Salary Negotiation — Three Variables Bigger Than the Amount
Salary negotiation feels like a number game, but three other variables decide more than the amount itself: relationship, next baseline, and the manager’s case upward. A manager’s honest take.
40-Something Manager Field Notes — Six Scenes Only Visible From the Chair
“40-Something Manager Field Notes” is a six-part series of scenes only visible from the manager’s chair — from the realizations that come after you sit in it, to the actual rooms where 1on1s, new-hire delegation, AI teaching, and salary or deadline negotiations actually play out. Honest field notes, not a manual. Series Index 1 What … 더 읽기
Deadline Negotiation — 3 Sentences to Use Instead of ‘I Can’t
Deadline negotiation collapses the moment you say ‘I can’t.’ Three sentences that keep the conversation open, the Iron Triangle behind them, and a short prep checklist.
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Delegating to New Hires — Four Methods, and Why ‘Just Trust Them’ Fails Most Often
There are four ways to delegate to a new hire, and the most popular one — ‘just trust them’ — fails most often. A mid-career manager’s honest take on why even pairing rarely survives a real schedule.
Teaching New Hires AI — Why the First Month Decides How They Work for Life
Teaching new hires AI is less about the tool than the habit they form in the first month. Three habits that stick for life, and the signs a manager should catch early.
My First 1on1 Failed — Why the Manual Doesn’t Work, and the 5 Principles I Use Instead
Most 1on1 manuals push weekly 30-minute meetings, but real schedules don’t allow it. A mid-career manager’s first 1on1 failure, and the five-line memo that replaced the manual.
What Becoming a Manager Revealed — ‘So That’s Why My Boss Did That
Becoming a manager exposes decisions you never understood as a junior. A mid-career take on why your old boss made those calls — and why you’d probably make the same ones now.
Meta Isn’t Going Quiet — Inside the Three-Pillar Bet on Ads, Glasses, and Robots
Meta looks quiet next to OpenAI, Anthropic, and Google, but the actual moves tell a different story. Here’s a fact-based breakdown of Meta’s three-pillar bet — ad automation, smart glasses, and humanoid robotics.
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When Can AI Talent Hiring ROI Actually Be Judged — Meta vs OpenAI vs Anthropic Timelines
Can Meta’s Superintelligence Labs already be called a failure at 10 months? A fact-based comparison with OpenAI and Anthropic timelines to find the right window for judging AI talent hiring ROI.
Tesla SpaceX Merger Fact-Check — What Musk Is Actually Building
SpaceX’s June IPO is nearly confirmed, X and xAI have merged into SpaceX, and Tesla merger rumors are spreading. This fact-check separates verified facts from speculation about Musk’s empire reorganization.
X Money’s 6% APY Reality Check — Musk’s 27-Year PayPal Comeback Explained
X Money offers 6% APY, FDIC coverage up to $250K, and a real threat to PayPal and Venmo. Here’s the fact-based breakdown of Musk’s payment market comeback — including the misconception of ‘25% principal guarantee.
Claude Design Market Reaction — What Figma’s Stock Drop Really Signals
Three weeks after Claude Design’s launch, Figma’s stock dropped 7% and designers split between panic and praise. Here is the full breakdown of market reaction, competitive landscape, and 12-month outlook.
Claude Design Handoff Explained — Concepts, Workflow, Tips, and Pricing
A practical guide to Claude Design handoff covering two export tracks, the closed-loop architecture with Claude Code, seven real-world tips, and plan-by-plan pricing breakdown.
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Claude Code Korean Text Issues — How It Differs From Codex and How to Fix It
Claude Code has its own Korean encoding quirks, but they’re fundamentally different from Codex. Here’s what breaks, why, and how to fix it.
How to Create Custom Agents in Grok — Make the Most of Your 4 Slots
Grok lets you create up to 4 custom agents, each with its own personality and instructions. Here’s how to set them up, allocate slots wisely, and prevent personality drift.
How to Work With AI — Stop Treating It Like a Vending Machine
Everyone says ‘use AI,’ but most people don’t know how. The problem isn’t the tool — it’s the approach. Here are 5 common mistakes, better prompt patterns, and the one skill that actually matters.
Codex + Claude Code Together — Why Using Both Makes You More Productive
Codex and Claude Code aren’t competitors — they’re complementary. Here’s how to split work between them for better results than either alone.
What to Do When Codex Goes Down — Switching to Claude Code and Gemini CLI
When Codex is down, you need a backup CLI ready. This guide covers Claude Code and Gemini CLI setup so you can switch in under a minute.
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Codex Korean Setup Guide — Fixing UTF-8 Encoding on Windows, Mac, and Linux
Korean text garbling in Codex CLI comes down to encoding settings. Here’s how to fix it with system locale, PowerShell, and config.toml — OS by OS.
Why Claude Keeps Going Down — Inside the April Outages and Where the LLM Race Stands
Claude saw multiple major outages in April, with Anthropic publicly acknowledging compute limits. Meanwhile, OpenAI shipped GPT-5.5 and Google’s stock surged on Gemini momentum.
AI-Skilled Workers Earn 56% More — What AI Literacy Is Actually Worth
Workers with AI literacy earn 56% more in the same roles. As AI becomes the new English proficiency, here’s what the data says about generational approaches and career investment.
If Your Company Won’t Train You, You Lose — Why Waiting on AI Reskilling Is a Career Risk
120 million workers need AI reskilling by 2030, but only 46% of companies offer training. Why waiting is losing, and how to start on your own — backed by data.
Claude Design Burned My Credits in Two Days — AI Credit Comparison Guide
A complete AI credit comparison of Claude Design, Code, ChatGPT, Gemini, and Grok. See how each service handles limits, transparency, and real-world value.
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Codex CLI Won’t Install? Troubleshooting Guide for Setup Errors
Fix common Codex CLI install errors. Node.js version mismatch, npm permission errors, API key setup, PowerShell issues, and version conflicts — all covered step by step.
Codex Troubleshooting Series — From Korean Text Issues to Error Fixes
A troubleshooting series for Codex users working with Korean text. Covers encoding issues, Claude Code comparison, install errors, and error code fixes. Series Index 1 Is Codex Korean Text Corruption Still a Thing? Cloud sandbox encoding causes and workarounds (2026 edition) 2 Codex vs Claude Code for Korean Developers Encoding, performance benchmarks, pricing, and hybrid … 더 읽기
AI-Era Workers Series — Generational Shifts and the Fractional Executive Trend
Analyzing how AI is reshaping the workplace from a manager’s perspective. From generational shifts to the fractional executive trend. Series Index 1 From ‘That’s Not My Job’ to ‘I’ll Handle It’ A manager’s view on Gen Z workplace changes and the AI variable 2 The AI-Era Case for Senior Part-Timers What companies are quietly calculating … 더 읽기
Codex Error Messages Explained — 10 Common Errors and How to Fix Them
Troubleshoot 10 common Codex errors including API failures, encoding issues, sandbox problems, timeouts, and permission errors. Each with cause and fix.
AI Replaces Tasks, Not Jobs — The Real Difference Between Those Who Survive and Those Who Don’t
AI will displace 92M jobs but create 170M new ones. The real question isn’t whether your job disappears — it’s which of your tasks get automated. Data-driven analysis.
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The AI-Era Case for Senior Part-Timers — What Companies Are Quietly Calculating
Three full-time juniors vs. one part-time senior with AI. Companies follow the math. Here’s what the senior part-time AI trend means for careers at every level.
How to Use Custom Instructions on Grok — Workspaces, Agents, Memory, and Setup Guide
Yes, Grok has custom instructions. Learn how to set them up, use Workspaces for project separation, configure up to 4 Custom Agents, and manage Grok’s memory feature.
Codex vs Claude Code for Korean Developers — Encoding, Performance, and Which to Choose
Comparing Codex and Claude Code from a Korean developer’s perspective. Encoding, performance benchmarks, pricing, and when to use which.
From ‘That’s Not My Job’ to ‘I’ll Handle It’ — A Manager’s View on Gen Z, and the AI Variable
Gen Z workplace attitudes are shifting. A mid-career manager breaks down the data, the real change, and why AI may matter more than any generational debate.
Send AI Tasks From Your Phone — How Claude Dispatch Turns Commute Time Into Work Time
Use Claude Cowork Dispatch to remote-control Claude Code from your phone. Setup guide, security tips, and real-world scenarios for working with AI on the go.
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The Complete AI Instructions Guide — From Setup to File Management, Debugging, and Remote Collaboration
The AI Instructions Guide series starts with the basics of setting up custom instructions, then progresses through file-based management, common mistakes, debugging, privacy concerns, and remote collaboration. Read in order or jump to the topic you need. Series Index 1 Stop Repeating Yourself to AI How to set up custom instructions on Claude, ChatGPT, and … 더 읽기
Where Does AI Store Your Conversations — Memory, Privacy, and Training Policies Compared
Compare how Claude, ChatGPT, and Gemini store your conversations, use them for training, and let you opt out. Plus the local vs cloud memory distinction in Claude Code.
7 Common Mistakes That Ruin Your AI Instructions
The 7 most common mistakes people make when writing AI instructions, with Before/After examples. Fix your instructions and the same AI responds differently.
Manage AI Instructions Like Files — A VS Code + CLAUDE.md Guide for Non-Developers
Go beyond web-based AI settings. Learn how to manage AI instructions as files in VS Code with CLAUDE.md — no coding required.
When AI Ignores Your Instructions — A Practical Debugging Guide
When your AI ignores instructions, here is how to diagnose and fix the problem with practical debugging tips.
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Custom Instructions on Grok, Claude, and ChatGPT — Setup Guide With Templates
Compare custom instructions on Claude, ChatGPT, and Grok. Includes copy-paste templates for reports, blog writing, and translation.
Tesla Slumps While SpaceX Goes Public — Why the Market Splits Musk’s Empire in Two (Part 1)
Tesla is down 20% in 2026 while SpaceX prepares a record $1.75 trillion IPO. Same Musk, opposite verdicts. We unpack the FSD licensing collapse, Waymo’s runaway lead, China’s surprise rebound, and what makes SpaceX different.
What the SpaceX IPO Actually Builds — The Space Economy Retail Investors Are About to Meet (Part 2)
SpaceX is raising up to $75 billion in its June IPO. Where the money goes, which public stocks ride along, and the surprising fact that Alphabet and Fidelity shareholders already have SpaceX exposure they never asked for.
Managing Your Entire Project with CLAUDE.md — docs Folder Structure and Auto Changelog
Place CLAUDE.md at your project root and Claude Code reads it automatically every session. Structure a docs folder with trigger-based update rules and auto-logged changelogs to keep everything current.
Upgrading from React Router v6 to v7 — What Changed and a Step-by-Step Migration Guide
React Router v7 merges packages, makes Data Router the default, and cuts bundle size by 15%. Here is a practical step-by-step guide to migrating from v6.
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Automate Receipt Organization with n8n — Drop an Image in a Folder, Get a Google Sheet
Drop a receipt photo into a Google Drive folder and n8n automatically reads it and logs the details into a Google Sheet. A step-by-step guide for anyone trying n8n automation for the first time.
When the AI Stopped, So Did I — Warning Signs of AI Coding Tool Dependency
If your workflow completely stalls when an AI coding assistant goes down, that’s dependency — not leverage. A research-backed look at AI coding reliance and how to recalibrate.
How to Deploy a React Project — A Non-Developer’s Guide to Vercel and Netlify
A step-by-step guide to deploying React projects with Vercel or Netlify. From GitHub setup to fixing React Router 404 errors, this practical guide is built for non-developers.
Manage Product Data Once, Show Test Products Only in Staging
With automatic test product filtering, you can manage product data in one place while hiding test products in production and showing them only in staging. Runtime hostname detection simplifies deployment to a single build.
Figma-Generated React Code Won’t Go Back? Set Up React Router
React code from Figma is a single-page app with one fixed URL. Learn how to fix back button, bookmarking, and sharing issues with React Router and server config.
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Python Installation Makes PDF Merging Basic — First Steps in Document Automation for Non-Developers
Python is free and one installation enables PDF merging, file organization, and data processing. Non-developers can automate repetitive tasks with the pypdf library while gradually improving work efficiency.
What My Portfolio Reveals About the New Cold War: Decoding 2026 Geopolitics Through URA & ARKX
In early 2026, my URA and ARKX ETFs rose. Venezuela military operation, SpaceX IPO plans, European rearmament. This analysis decodes the geopolitical shifts behind portfolio returns through three signals: energy, space, and defense.
How to Talk to Developers (Part 2): Technical Requirements Checklist for Specifications
More important than “This feature is critical for business” is “Exactly when does it execute?” Here’s a breakdown of the essential items that make developers say “I can start working on this right away.”
How to Talk with Developers (Part 1): Understanding “It’s Technically Difficult”
When developers say “it’s technically difficult,” how do you know if it’s really hard or something else? A practical guide for PMs on asking the right questions.
Why MD Files Are Essential for AI Work – Prompts Alone Aren’t Enough
Ever lost your way while working with AI through prompts? Setting up a system with MD files first helps AI deliver consistent results. Learn about MD-based AI collaboration through a real HR policy system case study.
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Notion vs Obsidian: Choosing the Right Note-Taking App for You
Compare Notion and Obsidian’s strengths and weaknesses to find the perfect fit for collaboration-focused or personal knowledge management users. Covers critical factors like server dependency, security, and plugin extensibility.
Space Delivery War: What’s the Difference Between SpaceX and Rocket Lab?
Does it cost $930 million or $100 million to send something to space? SpaceX and Rocket Lab target the space market in completely different ways—like heavy trucks vs. express delivery.
SVG Files Backend Developers Often Miss: Not Knowing This Means Working Twice as Hard
The era of managing icons with GIF and PNG is over. Discover why SVG became the web icon standard since 2017, the secrets of reusability that backend developers must know, and critical security risks you can’t afford to miss.
5 Months After the GENIUS Act: How Stablecoin Regulation is Reshaping Global Markets and Korea’s 2026 Response
Five months after President Trump signed the GENIUS Act into law, the global stablecoin market is undergoing a dramatic transformation. USDC trading volumes surge 30%, USDT faces regulatory uncertainty, and South Korea prepares a won-backed stablecoin bill for 2026. Here’s what investors need to know about this regulatory shift and its ripple effects across Asian markets.
Using FTP Will Get You Hacked: Why Non-Developers Must Know About SFTP Before Connecting to Servers
Ever installed FileZilla and wondered whether to choose FTP or SFTP? FTP sends passwords in plain text, creating serious hacking risks. Learn how to connect to servers safely during your AI learning and development journey through real-world examples.
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Figma + VS Code + Cursor vs Genspark AI, which Is Better for Building a Website?
This post explains how to choose between Figma + VS Code + Cursor and Genspark AI when building a website, by separating speed-focused use cases from long-term operation needs.
How to Never Hear “저요? 왜요? 제가요?” Again in Korean Companies
The Korean “Three Yo’s” (저요? 왜요? 제가요?) appear when cross-team communication lacks clarity. This article explains how to eliminate these reactions entirely by using role-aligned communication—a practical method widely used to improve Korean workplace collaboration.
How to Use Figma Make and VS Code Together: A Practical Setup for Mock API Login and UI Editing
Figma Make doesn’t support API calls, which makes it hard to preview UI after login. By using a simple Mock API on the Figma side and a real API on the VS Code side, you can safely test the full UI flow without breaking anything.
Why Your Rank Math Sitemap Triggers the Error: “X-Robots-Tag HTTP Header Detected: noindex” — The Complete Google Search Console Fix (2025 Update)
If Google Search Console shows the error “X-Robots-Tag HTTP header detected: noindex,” it often comes from Rank Math’s default sitemap headers and Google’s stricter interpretation introduced in 2024–2025. This guide walks you through the accurate, verified fix using WPCode.
The Real Issue Behind Figma Make Export and VS Code Sync: Why index.css Breaks Even Without Editing It
Repeated Figma Make exports (regenerate) overwrite index.css and slowly create style priority conflicts with globals.css. Even if you never modify index.css, AI tools and structural changes inside Figma can lead to unexpected style issues. This guide explains why it happens and how to build a stable CSS workflow with a clear separation between auto-generated and human-managed styles.
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Is “Codex Korean Text Corruption” Still a Thing? (2026 Update) Causes and Safe Workflows
Codex Korean text corruption can still happen. It’s often caused less by the model and more by Windows/PowerShell codepage issues, so use minimal edits, review diffs, and validate immediately.
5 Traits of People Who Stay Strong in the Age of AI – How We Prepare for 2026
Even in an era where AI is evolving at lightning speed, certain people remain steady and continue to grow. Their strength doesn’t come from advanced technical skills alone, but from their mindset and daily habits. This post outlines the practical traits and strategies we need to prepare for 2026.
When Your Figma Make Code Breaks in VS Code: Start by Checking the globals.css & index.css Conflict
Figma Make generates all styles inside globals.css, but during the download process, a default index.css file is also created by Vite. When you organize files in VS Code or let AI tools like Cursor or Copilot refactor the code, index.css often becomes the file that gets modified first. This splits the styling logic into two separate sources. Once you sync the code with Figma again, the mismatch between globals.css and index.css causes the UI to suddenly break. This post explains why it happens and how to build a structure that remains stable even through continuous Figma–code updates.
Tailwind CSS: What Developers and Publishers Really Mean — And Why It Comes Up So Often in Meetings
Tailwind is more than just a styling tool—it’s a CSS framework that dramatically speeds up development and keeps design consistent across a project. This guide explains what Tailwind really is, why it’s frequently mentioned during meetings, and how it differs from traditional CSS approaches, all in a way that non-developers can easily understand.
Complete Guide: Common Mistakes Everyone Makes When Uploading a Project from VS Code to GitHub — and How to Fix Them
This is a practical guide that solves the common issues everyone encounters at least once when uploading a project from VS Code to GitHub for the first time—endless “Commit & Push” loading, missing repositories, and accidental node_modules uploads. From fixing remote connections to configuring a proper .gitignore and recovering your first push, this guide summarizes the fastest and most accurate recovery steps based on real-world examples.
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Using Cursor IDE and VS Code Together: A Practical Coding Strategy for Non-Developers
When working with Figma-based projects, using Cursor for prompt-driven coding and VS Code for build and commit tasks allows even non-developers to handle code more comfortably. This post explains why using both tools together creates a smoother and more reliable workflow.
Visualizing Complex Development Logic Instantly with NapkinAI: A Practical Free Guide for PMs and Planners
NapkinAI turns complex development logic into clear diagrams with just a few lines of text. It can even visualize real developer code, making it easier for PMs and planners to understand backend flows. The free version is powerful enough for real-world use, helping you analyze systems and create documentation quickly.
Who Do Companies Call a “Person with Good Sense”?
What companies call “sense” isn’t simple quick-wittedness. It’s the ability to read context, timing, and emotion to steer work smoothly. I’ve organized a practical checklist you can use right away in meetings, emails, and reports.
How Different Job Levels View Deadlines | Understanding Each Other’s Clock
The weight of a deadline changes by role. For junior staff, it marks the end of a task. For practitioners, it’s a handoff point. For leaders, it’s a promise that builds trust. A team finds its true rhythm only when everyone understands each other’s clock.
When a team member doesn’t keep a work commitment, is staying silent really the answer?
When you see a team member not keeping their commitments, simply “letting it go” is only a temporary fix. The real solution isn’t to hide your feelings, but to shift the frame of the conversation so you can find a better way to move forward together. Practicing how to speak gently yet clearly is what builds trust in a leader.
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Negotiation Is Not a Skill but a “Relationship Design” — Summary of 『Getting More』
Wharton professor Stuart Diamond, author of Getting More, says that “negotiation is not a game of logic, but an art of perception.” The book focuses on understanding the other party’s emotions and perceptions, and on building trust through a series of small, consistent gains. Whether in B2B partnerships, organizational negotiations, or project discussions, it reveals why people who rely on “relationship design,” rather than “power,” consistently achieve better outcomes.