Facts may be asserted. Material may not.
Everything the AI knows about a client is split in two. A fact is a claim the business will stand behind being told to a stranger; it is confirmed by a human and it is short. Material is raw: notes, transcripts, what was visible in a set of photos. The concierge reads facts only; the writing tools read both. Without that line an accumulating brain becomes a fabrication engine that grows more confident over time, and one stray sentence in one note turns into a promise made to a customer. Only one fact per subject is ever live, so a contradiction is raised to the owner instead of quietly overwriting the old answer.


