Blog

• Browser-only DICOM anonymization: Inside the DICOM (.dcm) viewer/anonymizer 2025-09-25
  A detailed walkthrough of ixam.net's DICOM (.dcm) viewer/anonymizer, covering its capabilities and operational safeguards.
• Time to Stop Calling Male Subordinates “-kun”: How Honorifics Distort Evaluation and Relationships 2025-09-05
  In many Japanese workplaces, men are addressed with the diminutive '-kun' while women are called '-san.' I unpack why that seemingly harmless habit warps evaluations and relationships, and why every subordinate deserves the same level of respect.
• What to Know Before Your First Promotion: A Title Is a Role, Not a Status 2025-09-05
  Many first-time managers equate their new title with higher social status. I unpack why that illusion is dangerous, how it corrodes character, and what mindset protects you when you eventually step down.
• What Aptitude Does Management Really Require? The Power to Put Yourself on the Shelf 2025-09-04
  Conventional wisdom lists the traits of a good manager, yet everyday reality demands something less glamorous: the ability to set aside your own shortcomings and keep the organization moving. I explain why this uncomfortable skill matters and how it differs from mere arrogance.
• Every Job Ends When the Deadline Arrives: A Lifeline from a Burning Project 2025-09-03
  “No matter how endless the work seems, the deadline will arrive.” A respected CTO told me that during an IT project that had gone completely off the rails. I unpack the literal and deeper meanings of deadlines and offer this mindset as medicine for people being crushed by work.
• Does AI Democratize Information—or Turn into a Weapon for Exposure? 2025-09-02
  AI democratizes information in an instant while also causing unintended exposure—it delivers exactly what people seek at unprecedented speed.
• Learning about Quantum Computers through Dialogue — 🧙‍♂️ (Professor) and 🐣 (Student) Take a Coin-Flip Tour across the Universe 2025-09-01
  🧙‍♂️ (Professor) and 🐣 (Student) talk through what quantum computers and qubits are, unpacking superposition, measurement, codebreaking, and real-world applications in an easygoing dialogue.
• Learning about Serverless through Dialogue — 🧙‍♂️ (Professor) and 🐣 (Student) Survive Cloud Billing 2025-09-01
  What is serverless? Through a dialogue between 🧙‍♂️ (Professor) and 🐣 (Student), we unpack its mechanics, strengths, and even the billing risks that come with the convenience.
• The Dilemma of Developing Subordinates: Should You Invest in Top Performers or Lift Up Strugglers? 2025-09-01
  Managers agonize over whether to spend time on their strongest people or on those who lag behind. Drawing on my own failures and organizational theory, I explain why I now focus my time on those who can already perform—and how that approach ultimately lifts the whole team.
• The Convenience Paradox: Why Tool Sprawl Keeps Crushing Productivity 2025-08-31
  The more convenience tools we adopt, the more chaos erupts on the ground—and the more maintenance costs explode. Drawing on everyday experience and real-world cases, I argue that the issue is not UX but cost structure, and that organizations must either tame or control their tool landscape.
• What Is Management? Why Managers Fail Without a Definition 2025-08-31
  Management is every activity that keeps an organization achieving its goals. I clarify how it differs from leadership, why ESG and CSR are environmental constraints rather than new purposes, and why managers who lack their own definition always fail.
• Is Search Dead? Exploring the Future of LLMs and Generative AI 2025-08-30
  Google search is deteriorating while ChatGPT is on the rise—by tracing the history of search, we explore the world after generative AI becomes the gateway to information and what comes next, including the death of SEO and the dawn of the AEO wars.
• What Is AI Fatigue? Responsibility Fatigue and the Future of Work Design 2025-08-30
  AI makes work easier, but people grow tired of the judgments and responsibility that remain—that is the true nature of AI fatigue.
• What is zero trust? Buzzword or new security stack? A clear explanation of zero trust. 2025-08-30
  What exactly is zero trust? Is it just a buzzword or a new set of security technologies? This article clarifies how it relates to perimeter defense, debunks common myths, and explains why "removing implicit trust" matters.
• Legacy Will Keep Being Born—Tame It Anyway: A Future Vision for Citizen Development (Part 7 of 7) 2025-08-28
  Legacy will always emerge. The future of citizen development lies not in banning it, but in clarifying its role as a draft, partnering with professionals and generative AI, and taming legacy through governance that aligns every vantage point.
• Comprehensive comparison of UUID v4, UUID v7, and ULID: how to balance time order, efficiency, and readability 2025-08-27
  A deep dive into UUID v4, UUID v7, and ULID—how to weigh time ordering, collision probability, database efficiency, and implementation pitfalls, with notes on UUID v1 and v6.
• Misaligned Vantage Points Mass-Produce Negative Legacy (Part 6 of 7) 2025-08-27
  Citizen development turns into negative legacy not because of tooling, but because executives, frontline teams, IT, and middle management operate on different time horizons. Their misaligned vantage points elevate short-term wins over long-term stewardship. Understanding that structure reveals what it takes to carry citizen development into the future.
• Citizen Development Isn’t Omnipotent—It Is “Draft Development” (Part 5 of 7) 2025-08-26
  Citizen development is not a path to production-grade systems. Its value lies in acting as a draft that visualizes requirements from the user’s perspective. A well-crafted draft reduces misinterpretation and gaps, improving the precision of professional implementation—provided experts always do the final clean copy.
• Learning Blockchain through Dialogue: Is It a Shield for the Weak or Armor for the Powerful? Reflections from a Conversation between 🧙‍♂️ (Professor) and 🐣 (Student) 2025-08-26
  Blockchain's immutability can protect the vulnerable yet also arm those in power. Through a dialogue between 🧙‍♂️ (Professor) and 🐣 (Student), we examine its purpose and the issues it raises.
• Learning IPv6 through Dialogue — 🧙‍♂️ (Professor) and 🐣 (Student) Talk about IPv4, IPv6, and Surviving the Employment Ice Age 2025-08-26
  🧙‍♂️ (Professor) and 🐣 (Student) unpack the differences between IPv4 and IPv6, why adoption has been slow, and how routing, NAT, SLAAC, and security models all shift in practice.
• The Legacy That Generative AI Saves—and the Legacy It Abandons (Part 4 of 7) 2025-08-25
  Generative AI can analyze and port existing code, but assets that were never expressed as code—like no-code apps or RPA flows—are far harder to rescue. Future debt will concentrate in artifacts left as black boxes.
• What Generative AI Is Critically Missing: Dignity, Conviction, Responsibility, and the "Self" 2025-08-25
  Generative AI’s limitation is not a lack of knowledge; aside from rare exceptions, it lacks the dignity, conviction, and sense of responsibility that humans take for granted. I map current stopgap measures and research trends, then go further to ask what responsibility means and how humans and AI differ down to the Cartesian notion of the "self."
• The Light and Shadow of Modern Citizen-Development Platforms (Part 3 of 7) 2025-08-24
  RPA and no-code/low-code platforms win hearts with instant results and persuasive visualizations. Yet real-world use demands programming-grade skills and system design, while SaaS/PaaS dependency erodes portability. These traits risk spawning debt even harder to unwind than Kami Excel.
• Was Kami Excel Truly the Villain?—From Savior to Negative Legacy (Part 2 of 7) 2025-08-23
  Kami Excel was not evil. It was a necessary remedy that saved frontline teams, yet it turned into negative legacy because organizations failed to govern it and society lacked IT literacy. Kami Excel was fundamentally readable—had true IT adoption taken hold, it might have been an ideal productivity tool.
• Why Agentic AI Will Radically Boost Personal Productivity—and What Comes Next 2025-08-23
  Agentic AI is a new type of AI that plans and acts on its own in line with the user’s goals. This article explains its characteristics and potential, the cautions for adoption, and how widespread use could change the role of humans and our ways of working.
• Is Citizen Development the Return of EUC?—Lessons from Kami Excel (Part 1 of 7) 2025-08-22
  Citizen development is not a new idea. Revisiting the history of EUC and Kami Excel reveals a recurring pattern of short-term success turning into long-term debt. By comparing today’s no-code and low-code tools with their predecessors, we can grasp both the risks and possibilities of citizen development.
• Charting the Future of Citizen Development—History, Today, Generative AI, and Beyond (Part 0 of 7) 2025-08-21
  Is citizen development truly the future of software creation, or is it Kami Excel 2.0 reborn? This series follows the history from EUC to RPA and generative AI to explore the real nature and possible futures of citizen development.
• How I built a browser-based binary editor 2025-08-21
  A recap of how I designed and implemented a binary editor that runs entirely in the browser, along with the pitfalls I ran into.
• Designing and implementing a browser-only SVG editor 2025-08-20
  The pain points I wrestled with while trying to build an SVG editor that runs entirely in the browser.
• [Under revision] Practicing ISM (Interpretive Structural Modeling) with a tool: from SSIM to reachability matrices, level decomposition, and graphing 2025-08-18
  Walk through ISM step by step—building the SSIM, computing the reachability matrix, decomposing levels, and visualizing with Graphviz—using the browser-based tool.
• Simulating the Monty Hall Problem to See Why Switching Wins 2025-08-17
  The Monty Hall problem is a classic clash between intuition and logic. This article visualizes it in both Excel and a browser-based simulator so you can feel why the 'switch doors' strategy wins.
• The Possibilities—and New Anxiety—That Generative AI Brings 2025-08-17
  Generative AI has dramatically expanded what individuals can make real on their own, yet it forces us to ask what matters in a world where anyone can easily turn an idea into reality.
• Famicom 'L'Empereur' Fast Consulate Route Guide 2025-08-16
  A detailed breakdown of how to reach the Consulate appointment in Scenario 1 of the Famicom version of L'Empereur as fast as possible by planning around resets.
• Building a serverless blog with a custom domain and CMS on the Hugo + GitHub + Decap CMS + Cloudflare Pages stack 2025-08-14
  A complete guide to creating a fast, low-cost, custom-domain serverless blog with Hugo, GitHub, Decap CMS, and Cloudflare Pages.