Mastery · Intermediate
Debugging & Optimization
Fixing & Refining
Strategies for breaking Hallucination Loops, conducting Vibe Checks, and using AI to Refactor code for performance and cost.
01
The Hallucination Loop
Sometimes AI tries to fix a bug and creates two new ones. This spiral is a 'Hallucination Loop'. If you find yourself arguing with the AI, Stop.
- Don't double down. The context window is likely polluted with errors.
- Revert to the last working commit (Git is essential).
- Clear the chat history and re-prompt with a cleaner problem description.
02
The Vibe Check
Automated tests are great, but the 'Vibe Check' is the manual human review of the 'Gestalt'.
- Does the UI feel responsive?
- Are the animations smooth?
- Does it solve the user's actual problem?
- This step cannot be automated. It is the core responsibility of the vibecoder.
03
Optimization & Refactoring
Once it works, make it fast. Use the 'Jeff Dean' persona to optimize your codebase.
01
Algorithmic
Ask AI: 'Identify O(n^2) loops in this file and refactor to O(n)'.
02
Memory
Ask AI: 'Check for memory leaks or unclosed connections'.
03
Cost
Use cheaper models (Haiku/Flash) for simple refactors, save Opus/Sonnet for logic.
04
Tool Chaining for Debugging
If Cursor is stuck, copy the error log and paste it into a 'Reasoning Model' like o1 or Claude 3.5 Sonnet in a separate window. Ask it to diagnose the logic, then paste the solution back.