Vibecoding 4: keep a change or send it back
Three changes an agent might propose in your editor, and the rule that decides each one: can you read all of it, and do the tests pass. Lesson 4 of the vibecoding course.
One round with an agent in the editor
- You describe the change in words
- The agent edits the files
- You read the change and run the tests
- Keep it, or send it back
| Change | Changed lines | Tests | Decision |
|---|---|---|---|
| A rename | 3 | pass | keep |
| A new button | 12 | fail | send back |
| A whole-file rewrite | 90 | pass | send back: too long to read |
The limit of 20 lines is this lesson's rule, written as READ_LIMIT in its spec; pick your own and keep it.