Definition
Plain language
Noticing that a new fact cancels an old one and updating your memory to use the current version, not the stale one.
As stated in the literature
In stateful agents, correctly recognizing that a new value invalidates a previously stored value and discarding the stale one; the supersession gap is the accuracy lost when this must be done from compressed notes rather than full context.
Also called: supersession gap
Why it matters: It matters because agents that summarize and compress their memory can silently keep using stale facts unless they master this skill.
For example, when a customer updates their shipping address, the agent should use the new one and forget the old, not mix them up.
Heard on the show
“The accuracy an agent loses when it has to do this from compressed notes instead of full context, that's the supersession gap.”Episode 180 — The Bug Where Smart Assistants Read a Fact and Still Forget It