By Suman — Part 1 of the **Practical RAG* series. All code is in a runnable notebook: https://www.kaggle.com/code/sumannath88/ep01-simple-rag
Everyone talks about RAG. Far fewer people have built the simplest version end to end and looked at exactly where it falls over.
That's what this series does. We start with the most naive RAG pipeline that actually works, understand it completely, and then — one concrete problem at a time — make it better. No frameworks hiding the moving parts. Just Python you can read.
By the end of this post you'll have a working pipeline in about 40 lines that answers questions correctly — and you'll understand exactly why that success is misleading. Those hidden weaknesses are the roadmap for the rest of the series.
What RAG actually is
