 Alfred Hitchcock (I) (qv) refused to allow  David O. Selznick (qv) on the set. As a result, Selznick would  watch the rushes and then communicate to Hitchcock through extensive  memos. One of Selznicks concerns was Laurence Olivier (qv)s slow  delivery and use of long pauses in his performance. Selznick wanted  Olivier to quicken the pace.