Possibly the most famous telegram in Hollywood history was sent in 1925, when Herman J. Mankiewicz, the future co-writer of “Citizen Kane,” urged his newsman friend Ben Hecht to move West and collect three hundred dollars a week from Paramount. “The three hundred is peanuts,” Mankiewicz assured him. “Millions are to be grabbed out here and your only competition is idiots.” The rise of the talkies, for which Hecht became a prolific scenarist, soon brought a wave of non-idiot writers to Los Angeles, to supply the snappy movie dialogue of the thirties—a decade that, not incidentally, saw the rise of the Screen Writers Guild.