No article can anticipate every reader. A page may appear comprehensive to the author while leaving one important practical question unanswered for the people actually using it.
A simple feedback path—such as asking what the article failed to answer—creates a source of research questions. The response can be categorized as a missing fact, unclear explanation, new industry question, changed standard, business-specific gap, or request for a human.
This is more useful than treating engagement as a generic metric. The feedback identifies what knowledge needs to be developed next.
Google’s people-first guidance focuses on whether readers feel they learned enough to achieve their goal. A feedback loop gives the publisher direct evidence about that outcome.
Over time, the article library becomes more comprehensive not because a writer guessed every possible keyword, but because real questions were captured and resolved.