How RAG fails in production, and how to fix it
The follow-up to the RAG explainer. The four ways RAG breaks in production (chunking, retrieval, faithfulness, a stale index), the fixes that hold, and the testing that shows them.
What is RAG, really?
RAG from scratch: how chunk, embed, store, retrieve, augment and generate fit together, why it cuts hallucination without ending it, and where it quietly breaks. About 13 minutes.
What is an embedding, really?
A from-scratch guide to what embeddings are, how they're compared, why they make modern search work, and which model to pick in 2026. About 15 minutes.