In an imaginary observatory, a brass ledger tracks contributions to a paper about lunar cartography. The presenter coordinates the work but does not fill a collaborator slot. Ada prepares maps and Bruno calibrates the telescope. The exercise compares a ledger holding Ada alone with one holding both names. Successful completion requires two different collaborators. No measurements were taken; every example is invented solely to demonstrate the website submission controls.This synthetic quality assurance submission checks that the saved owner is excluded from the eligible co-author count. One selected co-author must fail the minimum of two, while two distinct selected QA co-authors must permit final submission. Retain this reference record.