Part X: The Living System
Anchors the website and membership layer.
Audience: Membership
Payments never stop evolving — which is why the book ends with a living layer rather than a conclusion. Chapter 39 separates what is permanent from what merely looks urgent, so every new acronym lands in a known category. Chapter 40 keeps a running, dated log of the changes that actually matter (with the Timeline of Money tracing the long arc as a sub-page). Chapter 41 hands you the reference shelf — the primary sources professionals really use — and closes the atlas.