The feedback mechanism used in this communication form is mainly immediate. It came in the Fed prosecution of a previous govt worker, after the judge ordered the govt to conduct an intensive search of electronic files for topical info. After the governing body finished the search, the accused objected, disagreeing that the keyword phrases the govt. used were insufficient to supply the acceptable info.
Magistrate-Judge John M Facciola ruled that the difficulty is outside the ken of a layman and could be fixed only thru a Daubert-style evidentiary hearing helped by expert sworn statement.