[troelsSteegin]

I think of "Federation" as aggregating content from disparate in-situ sources into a common index under a consistent schema. I agree that schema is good, am always tempted by big schema, and seem to always settle for task-specific schema with mappings between schemas strictly as necessary. LLM's seem nice for schema to schema mapping and supernice for binding entities from unstructured sources into schema. But overall I feel it is pointless to talk about structure without talking about hydration - about binding and mapping. Do you see that as "solved"?