The people who leave are part of the result.
A section is the smallest unit that still argues something. If it can be removed without changing the claim, it does not belong in the dossier.
This level sits inside What counting changes. It is written to be read on its own, but it assumes the claim made one level up. The dossier only works when the levels agree with each other.
The standard is the same at every depth: state the claim, show the evidence, name the limit, and link the source. Anything that cannot meet that standard is moved to a field note and marked as provisional.
Sections are written to be quoted. Each one carries its own claim, evidence, and limit.