Open items

Twelve entries are Not yet reviewed and need book access (library copies or full text), not more web searching. Open research gaps: the HBR Challenger article text, Huthwaite's closing experiments, Sandler's own pain funnel wording, the Command of the Message "Mantra", Blount's step names, Roberge's churn data, the Lavender reading-level rule, and any independent study of mutual action plans. The pack lead confirms the line on unnamed authors: authors of books, papers, studies and published reports are named; people known mainly for posts, courses or podcasts are not. DSMN8 and Buffer are flagged as competitors (Buffer because it sells social media scheduling; confirm). If a public edition is ever made it must be written separately, never show "What we take", and be read by Karl Foster first. Links were live when the research ran; check them at build. Check the background reading against the final proof and guardrails chapter before the academy publishes it.