July 1, 2026 Vector Search, From the Whiteboard to the Cloud

🎬 Also available as a blog walkthrough video: a narrated screencast of this post. TL;DR: Vector search is easy to picture on a whiteboard: turn text into a list of numbers, then find the stored items …

April 10, 2026 Is RAG Still Needed with 1M+ Token Context Windows?

The Kofferklausur, Revisited In September 2024, a colleague asked an audience: “What is RAG?” I answered: Kofferklausur [1]. For non-German speakers: a Kofferklausur is an open-book exam. You bring yo…