Log important discussions, insights, debugging findings, and design decisions into docs/discussions.md for future report writing. Use when the user discusses search quality, debugging results, design trade-offs, benchmark analysis, or any technical insight worth preserving for the final report.
Append a new discussion entry to docs/discussions.md when ANY of these occur:
docs/discussions.md to find the last discussion number---
## Discussion #N: [Concise title]
**Ngày:** DD/MM/YYYY
**Context:** [1-2 sentences: what happened, what the user observed]
**Root cause / Analysis:**
[Technical explanation with code snippets if relevant]
**Solution / Finding:**
[What was done or discovered]
**Takeaway cho report:**
- [Bullet points: what to include in the final report]
- [Why this matters for a Big Data course]
- [Comparison, trade-off, or insight worth highlighting]