Keeping the Judgment the Machine Cannot Hold
Book 1 gave the operating loop. Book 2 gave the failure modes. Book 3 gave the team and deliberately de-centered the PM. This book returns to the person in the seat without undoing that move: not PM-as-hero, but how to stay competent in the seat the team routes through.
The series’ own evidence (Quiet Erosion, Supervision Paradox, cognitive surrender, validator atrophy) says the capability everything depends on is perishable. No book in the series until now teaches the maintenance program. Fifteen chapters and a full appendix set: a deliberate-practice curriculum grounded in deskilling evidence, modeled on aviation’s mandatory no-automation proficiency checks.