The phrase sounds precise, but it often hides three different questions. The first is eligibility: can the system access and consider the page? The second is relevance: does the page answer the question the person actually asked? The third is selection: among all relevant pages, which source does a particular answer system choose for this query, user, location, time, and product surface?
Publishers can inspect and improve the first two directly. They can also make the page more trustworthy and useful, which may improve its chances of selection. They cannot see or control every internal ranking or retrieval decision. A platform can change its model, search index, source mix, or answer layout without publishing a factor-by-factor scorecard.
I therefore avoid writing claims such as “this heading is a confirmed ranking factor” unless an official source actually says that. A more honest statement is that descriptive headings make the topic easier for people and systems to understand. That is a useful design decision, but it is not a promise of placement.
This distinction prevents two costly mistakes. First, it stops us spending weeks on proxies that do not improve the reader's experience. Second, it stops us publishing confident advice that becomes false when a platform changes. Durable work improves the page's usefulness even when the next model behaves differently.