Learn. Understand. Keep a note.
From materials engineering to digital tools. A quiet space for making sense of things.
How to Choose Screen Resolution: Recommended Values and Actual Workspace
Read resolution numbers and workspace together A higher monitor resolution allows you to display more pixels on the
When windows are blurry due to different monitor scaling: Check scaling per screen
Case where the window becomes blurry only when moved to another monitor If an app that is clear on your laptop beco
Monty Hall Quiz: Understanding Conditions and Probability for Switching Doors
Monty Hall Condition Check Quiz These are self-created learning questions. Think of the answer first, then expand e
Number Guessing Game: Narrowing the Range with UP·DOWN Hints
Guess the Number: UP & DOWN Guess an integer from 1 to 100. Enter a number and it will tell you whether it is large
Percentage Calculator: Calculate Growth Rates and Ratios Directly
Percentage Calculator Please enter 20 for 20%. Enter only numbers; do not include commas, %, or units. Each input i
Restricting sources to AI: Requesting answers only within specified materials
Key Summary: When requesting the AI to use only specified materials, first define the list of materials, versions,
Creating Reading Notes with Claude: Distinguishing Between Quotes and My Interpretation
Key Summary: When creating reading notes with Claude, separate original text quotations, content summaries, and you
Leave configuration file cleanup to the Codex: Defaults and environment-specific differences
Key Summary: When entrusting configuration file cleanup to the Codex, first separate common defaults, environment-s
Resizing Images with Paint: Distinguishing Between Resolution and File Size
Key Summary: In Paint, you can change image dimensions to pixels or ratios. Save with a new name while maintaining
When HEIC photos won't open: Check file format and supported features
Key Summary: If HEIC photos do not open, first check if the file transfer is complete and determine if the app you
Saving a Webpage as PDF: Checking Page Truncation and Links
Key Summary: When saving a webpage as a PDF, check the print preview and the actual file separately. Check for trun
Difference between browser zoom ratio and screen scale: Site-specific adjustment
Key Summary: If only the text on a single site is small, zoom in on the browser; if multiple apps and icons are all
Managing Saved Passwords: What to Check Before Viewing, Editing, or Deleting
Key takeaway: Editing information stored in a password manager and changing an account's actual password on a websi
Exporting and Importing Bookmarks: Check the Backup File First
Key takeaway: Chrome bookmarks can be exported and kept as an HTML file. Preserve the original file and current boo
Reading Surface Roughness Ra: Why Measurement Length and Direction Matter
Key takeaway: Ra is the average of the absolute height deviations of the evaluated profile. When comparing values,
Understanding Stress Concentration: The Effects of Holes and Corners
Key point: Even with the same average stress, local stress can increase around holes and changes in geometry. Read
Understanding Absolute References in Spreadsheets: Cells to Fix When Copying Formulas
Key point: Leave cells that should move when a formula is copied as relative references, and fix reference cells th
Mean Versus Median: Which Number to Read in Skewed Data
Calculate the mean and median yourself Enter numbers separated by commas or spaces. Up to 500 values are allowed, e
Before Downloading Public Data: Terms of Use and Update Frequency
Key point: Before obtaining public data, read the permitted uses, the actual reference date, update frequency, and
Distinguishing Ads from Organic Search Results: Labels and Landing Pages
Key point: Do not distinguish ads, organic results, and official sites solely by search position or logos. Read the
Creep Versus Fatigue: Comparing Time, Temperature, and Repeated Loading
Key point: Creep concerns deformation that progresses with time under load; fatigue concerns damage associated with
Nominal Values Versus Actual Measurements: Reading Tolerances
Key point: A nominal value provides a basis for selection or design; read the permitted range and actual measuremen
File Hashes Versus Digital Signatures: Integrity and Publisher Verification
Key point: Hashes compare byte contents with the same reference file, while digital signatures help inspect signatu
When Secrets Enter a Git Repository: Deletion Versus Key Revocation
Key point: Deleting a secret from a repository does not automatically revoke the access granted by its issued key.