Recognition is only a clue
You may assume that finding a known document is easier to finish than discovering a useful new one: recognize the title, open the file, stop. That shortcut fails when your memory identifies a document family rather than a particular version. Familiarity narrows the search, but the task determines what counts as the right result.
A rewrite can keep the same name
Imagine looking for the delivery terms you accepted last month. Two PDFs are called “Delivery terms.” One says thirty days; a later rewrite says sixty. Both contain the supplier’s name and the phrase you remember. A search can retrieve both correctly while leaving your question unanswered. The missing distinction is which version accompanied your acceptance. The rewrite preserves the label while changing the commitment.
Check the claim, then stop
Before searching, state your target: the terms attached to last month’s acceptance message. Separate remembered clues from requirements. A filename is a clue; a link to that acceptance is a requirement. Open each plausible result and compare the relevant clause with that message or another reliable record linking the version to the event. Do not treat a recent modification date as proof of approval. If that link is missing, keep the result provisional. Stop when the evidence answers your stated question, not merely when the page looks familiar.
Hypothetical boundary case
Suppose two files contain identical wording, but only one is attached to the approval message. If you need the approved record, choose the copy linked to that message. If you only need to quote the shared clause, either copy can suffice after checking that clause. Decision rule: verify the property your task depends on: wording, version, or event linkage. Discovering useful material permits several candidates; re-finding a particular record needs an identity check matched to its purpose.
These examples are illustrative, not reported test results.