Blog Notes from the kernel. On AI, building things, and the messy bits in between. RSS In [1]: posts.all() Out[1]: Your RAG is probably worse than you think. Three ways to find out. 2026-05-08 The first time I shipped a RAG system, I knew it was working because I asked it three questions in the staging UI and the answers looked correct. Reader, it was not working. It took two weeks of users 4 min read