{"path":"research/catching-a-proposal-made-unnecessary/cases/S2.md","content":"*About: A safeguard against machine errors compounding: machines may not build on each other's output until a person has looked.* **A machine may check what a machine wrote, but may not build on it until a person has engaged with it.** *Build on* = split it, or use it as an endpoint of a new machine-written link. *Engaged* = any human contribution involving it (a keep, reword or drop on review, an answer, an attack, a link made by hand), not a vote alone. Resolves `TODO.md`'s open loop on machine-cut parts without a new claim kind, since `written_by` already marks the generation. Verified gap (2026-09-29): machine-cut parts are stored as `extracted`, embedded and source-linked, so auto-connect can link to them and a later split pass can cut them again with no person in between\n"}