What we know follows a developing news story for hours by rewriting a small "what we know" ledger of claims, confidence and sources every five minutes from fresh we evidence, discarding all raw history and correcting itself when sources disagree. Each cycle plans queries, fetches pages, triages snippets, merges a full new ledger in one structures call and throws the pages away. Nimble fetches and renders pages, Liquid LFM2.5 triages snippets, OpenAI merges the ledger, Tinybird RawTree stores every event and powers restarts, FLUX draws situation cards on major changes, Bedrock and Broccoli are wired for summaries and fix tickets. On the nor-easter stroy it made 54 corrections across 7 cycles while the ledger stayd flat.