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Every published English article, newest first (221 total).

  1. 5 Global AI Updates to Know This Week: October 6–12, 2026
  2. AI Agent Security: Limit the Impact of Prompt Injection
  3. Are ChatGPT GPTs Going Away? 2026 Retirement and Plugin Migration
  4. Gemini vs. ChatGPT for Coding: Antigravity and Codex Compared
  5. What Is GPT-6.1 Sol? Features, Pricing, and When to Choose It
  6. How to Use Ollama and Qwen on a Mac: A Complete Beginner’s Guide
  7. ChatGPT Browser Tools: Browser, Chrome, Computer Use, or Codex?
  8. Is That Really Your Family Calling? How to Handle AI Voice-Cloning Scams
  9. ChatGPT Personalization Guide for Beginners: Base Style, Tone, Characteristics, Custom Instructions, and Memory
  10. How to Check for Personal Data Leaks for Free: Email, Password, and Search Exposure
  11. 15 checks for a slow Mac: startup, storage, CPU, and memory
  12. How to Verify ChatGPT Answers with Google Search: A Five-Step Source-Checking Method
  13. What Is a Passkey? A Complete Beginner’s Guide to Cryptographic Keys, Website Security, Device Sign-In, and Account Recovery
  14. Is Chrome Slow Because of Your Tabs? How to Check Memory Usage
  15. Google Adds Search Performance Reports for Social and Video Content
  16. How to Write Articles for Google Discover: 7 Officially Supported Practices
  17. What Temperature Counts as a “Kokushobi” Extreme Heat Day in Japan?
  18. What to Do After Pushing an API Key to GitHub: Revoke, Clean Up, and Prevent Repeat Leaks
  19. How to Prevent OpenAI API Overspending: Alerts, Hard Limits, and App Safeguards
  20. How to Use Codex on iPhone and iPad with Remote
  21. What Is ChatGPT Health? Features, Eligibility, Privacy, and How It Works
  22. Addressing AdSense low-value content: changes and verification steps
  23. What Is Loop Engineering? Designing Safe, Verifiable AI Agent Loops
  24. What Is the Scheduled Page in ChatGPT? How It Works and Its Limits
  25. Do You Need GEO or AEO? Google’s Official SEO Guidance for the AI Search Era
  26. How to Make AI Articles Use Only Official Sources: Prompt Examples to Reduce Misinformation
  27. NotebookLM Is Now Gemini Notebook: What Changed and What Stays the Same
  28. How to Write a Codex SKILL.md and Require Explicit Invocation
  29. How to Make Codex Ask Before Making Changes: Plan Mode and Permissions
  30. How to Create PDF, Word, and Excel Files with ChatGPT: A Practical Guide
  31. ChatGPT file creation failures: separate generation, saving, and downloading
  32. ChatGPT Custom Instructions Now Allow 5,000 Characters on Paid Plans: What Should You Write?
  33. GPT-5.6 Sol vs. Terra vs. Luna: Which Model Should You Choose?
  34. ChatGPT Work vs. Chat and Codex: Scope, Permissions, and Review
  35. Choosing GPT-5.6 Sol, Terra, or Luna: API costs and ChatGPT access
  36. We've Relaunched the Imidef Blog | A Place to Quietly Organize Practical Knowledge for the AI Era
  37. [Latest 2026] Google Gemini 3.5: Capabilities and Roadmap for Adoption—The Full Picture of This Evolved Multimodal AI
  38. Can Codex 5.5 Run Smoothly on "Low"? A Practical Approach for Everyday Development
  39. How to Polish Your Email Text with ChatGPT Without Being Rude | Practical Prompts That Are Neither Too Formal Nor Too Cold
  40. Using ChatGPT to Create a “Personal Wall”: A Method for Generating Ideas, Just Like Bouncing Ideas Off a Wall
  41. How to Save 10 Minutes a Day with ChatGPT | Delegate Small Routine Tasks to Streamline Your Life and Work
  42. What Is the Difference Between Those Who Can Use AI and Those Who Can’t? A New Digital Divide Shaped by Daily Usage
  43. Is the Era of Google Search Coming to an End? A Simple Breakdown of the Differences Between ChatGPT Search and AI Search
  44. Changes That Happen to People Who Use ChatGPT Every Day | Things to Watch Out For Despite Its Convenience
  45. Why “Questioning Skills” Are Even More Important for ChatGPT Users
  46. Language Skills Are Essential for Using AI | The "Ability to Read, Think, and Communicate" Is More Important Than Prompts
  47. What Is GPT-5.5? A Clear and Detailed Explanation of What's Changed, Even for Beginners
  48. What Is ChatGPT Images 2.0? | A Detailed Explanation of Its Capabilities, New Features, and Use Cases
  49. What Changes When Blog Owners Use Codex? | The Era of Automated Content Creation and Site Optimization
  50. The Era of AI Controlling PCs Has Begun | Understanding the Shift from “Thinking AI” to “Working AI”
  51. Why Did GPT-4o Disappear? An Explanation of the Reasons Behind Its Discontinuation and the Background of ChatGPT’s Evolution
  52. Will AI Change the Way Children Learn? | A Summary of Changes at Home and School Based on Official Documents
  53. What's Actually More Convenient in iPadOS 26 | A Look at How Daily Usability Has Changed
  54. How to Fix a Slow or Frozen iPad | A Simple Guide to the First Steps You Should Try
  55. What's the Best Way to Use ChatGPT? | How to Get the Most Value for Your Money and Time
  56. ChatGPT Prompt Collection | Ready-to-Use Practical Examples and Tips for Creating Prompts That Are Less Likely to Fail
  57. Choosing a MacBook Air M4 configuration for your workload
  58. How to Search in the Age of AI | How to Choose Between Google Search and ChatGPT Search
  59. What's Next After Vibe Coding? | How Will Development Styles Change in the AI Era?
  60. Choose ChatGPT or Gemini by Task: A Practical 2026 Decision Guide
  61. What Can You Do with the Free Version of ChatGPT? A Beginner's Guide to the Differences Between the Free and Paid Versions
  62. What Is GPT-5.4? A Beginner’s Guide to the Differences Between GPT-5.4 and GPT-5.3 | A Comprehensive Overview of Performance, Use Cases, and How to Choose
  63. Summary of ChatGPT's New Features: April 2026 Edition | What's Changed? A Guide for Beginners
  64. ChatGPT and Gemini Official Specification Reference: Features, Integrations, and Data Controls
  65. What Is an AI Agent? A Simple Explanation of How They Work, What They Can Do, and What to Watch Out For—Even for Beginners
  66. A Five-Part ChatGPT Risk Check for Output, Data, Permissions, and Decisions
  67. The Complete Guide to What You Can Do with ChatGPT | Easy-to-Understand Explanations on Everything from Writing and Searching to Images, Audio, and Organizing Documents
  68. The Complete Guide to Using ChatGPT (For Beginners) | Easy-to-Understand Explanations from Getting Started to Tips for Asking Questions
  69. A Beginner’s ChatGPT Guide: Three First Tasks, Verification, and Data Controls
  70. What Is Vibe Coding? A New Programming Style Gaining Attention in the Age of AI
  71. What Is ChatGPT GPT-5.3? An Easy-to-Understand Explanation of the Latest Model’s Changes, Performance, and Differences from GPT-5.2
  72. A Boundary-First Security Review for TypeScript and Edge Runtime
  73. Review a development Mac setup: builds, memory, and updates
  74. Comparing Gemini 3.1 and ChatGPT 5.2: A Practical Guide to Choosing Based on Reasoning, Writing, and Development Workflows — Both Gemini 3.1 especially 3.1
  75. Xcode, VS Code, and ChatGPT: edit and verify a Swift change
  76. Do You Need a MacBook Air with 32GB of RAM? The Complete Guide to Choosing RAM So You Won’t Regret It [2026 Edition]
  77. 2026 Update: Is OpenAI’s “Codex 5.3” a Practical AI Code Generator for Real-World Use? — 2026 Review: Is OpenAI’s “Codex
  78. Codex Skills Explained: SKILL.md, Invocation, and Scope
  79. Summary of Common Pitfalls with the App Router | Common Pitfalls and Solutions for Next.js Deployment
  80. How to Serve ads.txt with Next.js and Verify AdSense Detection
  81. How to Diagnose AdSense Problems on Vercel
  82. What Is Codex 5.3 (GPT-5.3-Codex)? A Comprehensive Comparison with Existing Models Based on the Latest Information
  83. Vercel changes not showing: check the URL, commit, and cache
  84. How to Compare Search Console Clicks with GA4 Sessions
  85. How to Diagnose an Unexpectedly Low GA4 User Count
  86. Three GA4 Metrics to Check First—Without Mixing Their Definitions
  87. Why Overdoing Ads Can Backfire
  88. When AdSense RPM Looks High—Recalculate the Denominator
  89. iPhone Comparison Over the Last Three Years: Apple Intelligence-Compatible and Non-Compatible Models—An Overview of What They Can Do
  90. Why AdSense Has No Universal “Stabilization Month”
  91. Before Turning On AdSense Auto Ads: Preview, Exclusions, and Experiments
  92. AdSense Impressions vs. Page Views and Viewable Impressions
  93. A Measurable Checklist for AdSense “Ready” Pages With No Visible Ads
  94. How to Read Your First ¥1 in AdSense
  95. Three Checks When an ads.txt Recheck Appears Stuck
  96. What the “Repeat the Prompt Twice” Study Actually Found
  97. What Apple and Google's Gemini Collaboration Actually Changes for Apple Intelligence
  98. A Comprehensive Roundup of the Latest AI Trends for 2026 | What Changes Will Take Center Stage After Generative AI?
  99. Let's Categorize Tasks AI Is Good At and Tasks It Struggles With Based on Real-World Experience
  100. Diagnosing Next.js App Router: layouts, metadata, and Server Actions
  101. Comparison of Codex 5.2 and Codex 5.1 Max: The Best Choice for Long-Running Tasks and Large-Scale Refactoring
  102. A List of Really Useful Keyboard Shortcuts for Mac [No Need to Memorize Them—Just Use the Ones You Need]
  103. Why It's Hard to Tell When Mac Apps Need Updating—and My Solution
  104. How to Use Photoshop in ChatGPT: Connect, Edit, and Verify
  105. A Pre-Send Safety Check for ChatGPT Prompts
  106. Codex task boundaries: distinguish capability, access, and verified completion
  107. GPT-5.2-Codex Specifications and Adoption: Do Not Invent a Performance Review
  108. What Are ChatGPT’s New Image Generation and Editing Features? A Summary of Its Evolution as of December 2025
  109. Does AI “Understand” Chemistry? A Sober Look at Expectations and Reality
  110. GPT-5.2 Is Here: A Comprehensive Guide to Its Improvements, Pros, and Cons
  111. When Codex reaches a usage limit: correcting an older GPT-5.1-Codex-Max guide
  112. GPT-5.1-Codex-Max Is Deprecated: Move the VS Code Workflow to Current Codex
  113. Looking Back at GPT-5.1-Codex-Max—Official Facts vs. the Original Review
  114. Why GPT Codex Max Speeds Up Stock Trading Software Development and How to Use It
  115. Quantum Computing and Cryptographic Migration—What Is Established Now
  116. How I Ended Up Developing Stock Trading Software | The Joy of Development That Starts with a Spontaneous Idea
  117. What Is GPT-5.1? | An Easy-to-Understand Explanation of New Features, Performance, and Practical Changes [Latest 2025]
  118. ChatGPT: Summary of the Latest Information, November 2025
  119. Before ChatGPT Atlas Shuts Down: 2025 Features and the 2026 Migration
  120. The Philosophy and Practicality of “Walter Prompt” — The Ideal Form of High-Precision, Fact-Based AI
  121. A Chrome preset for TourBox: file contents and verification
  122. What Is ChatGPT Atlas? An Easy-to-Understand Explanation of Its Capabilities and Precautions
  123. Turning ChatGPT into a “Cross-Cultural Interpreter” Rather Than a “Translation Tool”
  124. "Space-Time Radio Station" Created with GPTs: A New Experience Broadcasting AI and Stories
  125. Develop Your Ability to Think Alongside AI: 3 Steps to Sort Through Your Doubts Using GPT-5’s Thinking Mode
  126. ChatGPT Is a “Tool for Thinking”—From “People Who Use AI” to “People Who Think with AI”
  127. Understanding Autumn Ailments Through "Mechanisms"
  128. Toward an Era Where AI “Interprets the World”—What I Realized for the First Time After Reading *America as Seen from Mexico*
  129. How Can We Turn AI from a “Tool” into a “Partner”?
  130. How would you compare GPT-5’s “way of thinking” to the human brain?
  131. Deep Research and Agent Mode: A Comprehensive Guide to Features, Use Cases, and Differences
  132. Why “Reading the Room” Cannot Be Assigned to One Brain Region
  133. The Complete Guide to Writing Prompts | Tips and Examples for Using ChatGPT
  134. How Installing CODEX in VS Code Made Development Surprisingly Easier
  135. The Surprising Effect of Fall Temperatures and Humidity on “Sleepiness”
  136. On days when you just can't seem to get motivated, could it be a "dopamine deficiency"?
  137. What Can You Do with Codex and VS Code Integration? A Comprehensive Guide for Developers
  138. How Is GPT-5 Instant Being Used? A Comparison of Examples from Japan and Overseas
  139. Is GPT-5 Instant an “Intuitive AI”? Unexpected Similarities to Human Inspiration and Ways to Use It
  140. Installing LuLu on macOS and Reviewing Its First Outbound Alerts
  141. Expanding the Codex Experience in VSCode: A Thorough Review of GPT-5's Thinking Mode
  142. Start Codex in VS Code: your first change, diff, and test
  143. Is the feeling of fatigue when atmospheric pressure drops just a “superstition”? Or is there science behind it?
  144. The Future of AI and Culture: Where Is Human Creativity Headed?
  145. The Lingering Summer Heat of 2025, as Seen Through Weather Data — How Does It Differ from Last Year?
  146. Build a small app with ChatGPT: scope, persistence, and recovery
  147. Psychology That Gives You a New “Ah-ha!” Moment Every Day—One Page a Day — ImidefWorks E-book
  148. Before Continuing an Old GPT-5 Chat: Retest After a Model Change
  149. Turning The Life-Saving Guide into a Family Preparedness Exercise
  150. Disney Princess: The Promise Book to Make Yourself and Those Around You Happy—Introduction
  151. If you “make” GPT-5 think, is it more polite than human discussions?
  152. Why Is “Thinking Mode” So Popular Even Though It’s Slow? — Six Reasons It’s Worth the Wait and When to Use It
  153. Using ChatGPT to Organize Health Information: Limits, Warning Signs, and Where to Seek Help
  154. Cognitive Health Habits: What the Evidence Supports and What It Does Not
  155. Using AI to Sustain New Learning Without Claiming It Extends “Brainspan”
  156. "Does 'Summer Fatigue' Set In in September?"
  157. Have you heard of “September Blues,” when summer fatigue sets in?
  158. Six Conditions for a Reproducible GPT-5 vs. GPT-4 Benchmark
  159. Fact-Checking GPT-5 Heat Advice Against Public-Health Guidance
  160. How to Verify AI Claims About Summer Humidity and Health
  161. Why Do People Buy Unnecessary Items on Sale? An Explanation Based on Behavioral Psychology
  162. A Dramatic Leap Forward with GPT-5! An Amazing Experience Where Project Instructions Are Implemented Exactly as Given
  163. Choosing Instant, Auto, or Thinking With a Current Task-Routing Matrix
  164. Headaches and Fatigue Before a Typhoon… Causes of “Weather-Related Illness” and the Right Ways to Deal with It
  165. The Truth Behind Pre-Typhoon “Headaches and Fatigue”—The Little-Known Connection Between Air Pressure and the Body
  166. Should You Use a Thinking Setting? Compare It With Three Answerable Tests
  167. Managing ChatGPT Scheduled Tasks: Editing, Pausing, Notifications, and End-of-Life
  168. Legacy Model Workflow Migration Checklist: Retest Fixed Inputs and Acceptance Criteria
  169. Thinking Mode Retirement Timeline: ChatGPT Product vs. API Lifecycle
  170. 5 "Crazy Ways" to Use GPT-5
  171. Starting Safely With Scheduled Tasks in ChatGPT
  172. A Complete List of What ChatGPT Can and Cannot Do (2025 Edition)
  173. Osaka July–August Heat From 2020 to 2025: A Recalculated Six-Year Table
  174. Why Drinking Water Does Not Eliminate Heat-Illness Risk
  175. How Do You Create ChatGPT’s “GPTs”? — How to Build Your Own AI and Examples of How to Use It
  176. How to Review and Delete ChatGPT Memory Without Confusing It With Chat History
  177. Full-Month Osaka Climate Analysis: July Temperature and Humidity in 2024 vs. 2025
  178. What Can ChatGPT Do? — Its “Capabilities and Limitations” in 2025
  179. What People Who "Struggle" with ChatGPT Have in Common—Your Prompt Is Wrong
  180. How to Review Smartwatch Health Data Without Diagnosing Yourself
  181. Is 2025 About More Than Just Temperature? The Truth Behind “A Summer with Excessively High Humidity”
  182. When Heat Hurts Concentration, Do Not Diagnose a “Hot Brain”
  183. Is it true that the “percentage of tropical nights” is increasing year by year? We examine this using data from Osaka over the past five years.
  184. How can we spot lies told by AI?
  185. Why Does AI “Lie”?—An Easy-to-Understand Explanation of the Hallucination Problem
  186. The Psychological Reasons We See Medieval Europe as an “Ideal World”
  187. Why Is Medieval Europe So “Romantic”?
  188. What the “Myth” of Medieval Europe Teaches Us
  189. “Inconvenient, but Romantic”: What Is the “Lost Sense of Security” Seen in Medieval Europe?
  190. Why Do Fantasy Worlds Always Resemble Medieval Europe? The “Conventions” Behind Games and Movies
  191. Why does the saying “The more choices there are, the harder it is to decide” hold true?
  192. On a Day When I Couldn't Get Motivated, I Tried Talking to an AI
  193. Writing a blog with AI: task boundaries and checks before publishing
  194. [How the Brain Works] Did You Know Why “Happy Memories Are the Hardest to Recall”?
  195. People who “get sleepy after drinking coffee” share a common physical trait
  196. How to Sort Out Embarrassing Memories That Surface at Bedtime
  197. Correcting Osaka’s Misleading Graph: Recalculating July 1–27 Temperatures
  198. How do we come to terms with the fact that we “don’t know”?
  199. Rakuten Mobile × Mobile Router: Enjoy a Comfortable Wi-Fi Lifestyle—How the 2.4 GHz Band Made All the Difference for a Stable Connection
  200. A Starry Sky Captured with the α6400—Points and Trails: Two Nights
  201. SEO to Get Noticed by AI? The Role of llms.txt and a Setup Guide
  202. The Day the Language Barrier Disappears: How Real-Time Translation AI Will Transform Tourism
  203. The Complete Guide to Using Whisper | How to Transcribe Recorded Audio with AI [Supports Japanese]
  204. Does the Language You Speak Change Your Personality? — How “Who You Are” Changes Depending on Whether You Speak Japanese, English, or Sign Language
  205. Just Before the Summer Three-Day Weekend! 5 Hidden Gems to Enjoy While Avoiding the Crowds
  206. AI and science projects? That’s what I wanted when I was a kid.
  207. How to Summarize Handwritten Notes Using ChatGPT
  208. Is ChatGPT Becoming "Tsundere"? The Truth Behind the Phenomenon Where Its Tone Changes When You Send Multiple Messages in a Row
  209. My eyes are tired… An AI-powered way to refresh them after too much smartphone use
  210. ChatGPT's Codex: Here's What Makes It So Impressive. It's Changing the Future of Code Generation
  211. The Story of How ChatGPT Looked in the Fridge and Planned a Meal for Me
  212. "How I Built a Chrome Extension in 5 Minutes": I Tried Making a One-Click Amazon Search Tool
  213. Get Ready for the 2025 Heat Wave and Power Outages! 5 Recommended Portable Fans & Power Accessories
  214. Panasonic Ionity EH-NE4K-H Review: A Hair Dryer That Saves Both Your Hair and Your Time with Fast Drying and Powerful Airflow
  215. A Five-Day Test for Safer Air-Conditioning Savings
  216. Three Base Formats for a Cold Summer Meal
  217. Seven Functions to Check in a Family Evacuation Kit
  218. How Will Travel Change in the Summer of 2025? The Latest Trends and Must-See Destinations
  219. Five Checks Before Buying Heat-Safety Gear
  220. 2025: The “Year One of AI Agents” Has Arrived! A Summary of the Cutting Edge of Evolution
  221. Five Flexible Ways to Start a Summer Morning