When an old source still ranks, what makes you re-check it before citing?

Asks which signals make a writer re-check an older high-ranking source before using it.

Older pages often rank well because they earned links, not because the claim is still current. I re-check when the claim involves price, version behavior, support policy, availability, or a button path that could move. For definitions or history, I may keep the older source with a narrow sentence. What signal makes you stop and re-check an old source before citing it in a summary?