fadedNot listed again within the publisher's next two editions, nor later (D33).
A trend is graded on whether the publisher keeps it, never as a hit or a miss (D6, D33).
All captured fields
rank
310
section
Privacy
subject
Vanishing Messages
page
275
confidence
medium
note
Title from the contents list in the SlideShare transcript of the publisher upload; order and section from contents page numbers. Quote added 2026-10-02 from the full slide transcript of the publisher upload (SlideShare, Wayback capture of the newer page format); source_url points at the section that holds the page.