Why is it layered?#
So the reader can stop as soon as the decision allows. Not every return needs a full reconstruction: if the judgment waiting is small and the change was contained, the first layer is enough. Forcing a complete briefing on every re-entry is how briefs become things people skim.
What is a re-entry checkpoint?#
The recorded point where the person last engaged, which they can see and correct. Everything in the brief is written relative to it, so the delta describes the gap between what they knew and what is now true.
Letting them correct it matters. A checkpoint the system believes and the person does not produces a brief that explains the wrong things, confidently.