It's bad to be too loud around other people.
Keith and Chris are in the library working on a problem set, near the librarian and other students.
Keith wants to check his answers with Chris.
Keith motions to Chris to show him his answer each time they finish a problem.
Keith asks Chris at normal volume what answer he got each time they finish a problem.
The librarian finishes putting away the stack of books that were returned the previous day.
The librarian eventually asks Keith to leave the library because he's disturbing other people.