Learn. Understand. Keep a note.
From materials engineering to digital tools. A quiet space for making sense of things.
Differences between JSON and CSV: Format suitable for tables and nested data
When exporting files, you frequently encounter a screen prompting you to choose between CSV and JSON. If you simply
Writing Git commit messages: Recording the purpose of the changes and verification results
If your commit list contains only 'Modified', 'Done', and 'Final', it is difficult to know which changes to look fo
Questions that make AI say what it doesn't know: Separating unverifiable and estimation
The most difficult response when asking an AI is when it naturally confirms information it does not know. While thi
Organizing Meeting Minutes with Claude: Comparing Decisions, Assignments, and Deadlines with the Original Text
Organizing meeting minutes using Claude allows you to quickly find key points within long notes. However, if you pr
Reviewing Codex changes: Checking diffs and execution results together
When the Codex fixes a feature and notifies you that the fix is complete, the first thing to look at is the actual
Distinguishing Browser Login and Windows Login: Reducing Account Confusion
You have entered Windows and a photo is visible in the top right corner of Chrome, but the blog management page may
Things to check before renaming the user folder: Prevent path errors
If your username in the Users folder on your C drive appears truncated or outdated, you might be tempted to rename
When you forget your login password: Official recovery path for your account
If you cannot remember your password on the login screen, you must first identify 'which account and which informat
Setting and Changing Windows Hello PIN: Differences from Account Passwords
If you log in with a short number on your PC but it doesn't work on the Microsoft account website, you must first v
Locking the PC when away: Distinguishing between auto-lock and logout
Just because your PC screen turned off while you went to get coffee doesn't mean the lock is complete. If you can s
Differences Between Local Accounts and Microsoft Accounts: Login and Sync Scope
You may encounter situations where documents are not visible after logging into a new PC with the Microsoft account
The Difference Between Press Releases and Papers: Checking the Claims, Conditions, and Evidence of Science News
You might read a science news report stating that “new technology doubled performance,” but the paper might describ
How to Verify Nobel Prize Candidate Claims: Distinguishing Between Nominator Announcements, Predictions, and Official Awards
When you see a headline like “Nominated for the Nobel Prize,” it may feel as though an official institution has rev
Reading Poll Numbers: Checking Sample Size, Sampling Error, and Confidence Interval
Looking at the survey results showing 52% in favor and 48% against, you might feel that the difference is distinct.
The Difference Between RAM and SSD: Distinguishing Between Insufficient Memory and Insufficient Storage
If a laptop specification lists 16GB RAM and 512GB SSD, can I add the two numbers together to get the total memory?
How to Read Web Addresses: Checking by Separating Domain, Path, Query, and Hash
When looking at long web addresses, it can be confusing to determine where the site name ends and the search criter
Understanding HTTP Status Codes: Check out 200, 404, and 500
HTTP Status Code Quiz: Expand Answers and Explanations Please solve each question first and then click 'Answers and
Request code explanation from AI: Check with execution flow and input examples
If you ask an AI to explain code you are seeing for the first time, you can easily get a plausible summary. However
Claude When You Need to Have a Conversation: Reducing Material Mixing and Goal Changes
When conversing with Claude, you find yourself organizing meeting minutes, drafting reports, and even reviewing sch
Logs to keep when continuing Codex work: Change files and verification status
If you close a window while working with the Codex or reopen the same project a few days later, you must first veri
Adjusting Text Clarity with ClearType: Check Order by Monitor
Function to check when only the edges of text are difficult to read If the icons and photos on the screen look fine
Using Color Filters: When It Is Difficult to Distinguish Colors on the Screen
Cases where it is difficult to read information distinguished by color alone If you distinguish statuses using only
Night Mode Settings: Schedule Time and Color Temperature Adjustment
Three things to set in night mode If your Windows screen appears yellow at night or the colors change every evening
Checking Monitor Refresh Rate: Distinguishing Cables and Settings
The maximum value of the monitor and the current output value are different. Even if the monitor description states