Seymour Chatman, in his book Coming to Terms, posits that the act of reading is "ultimately an exchange between real human beings [that] entails two intermediate constructs: one in the text, which invents it upon each reading (the implied author), and one outside the text, which construes it upon each reading (the implied reader)". Because the reader cannot engage in dialogue with the implied author to clarify the meaning or emphasis of a text, Chatman says, the concept of the implied author prevents the reader from assuming that the text represents direct access to the real author or the fictional speaker.[8] Chatman also argues for the relevance of the implied author as a concept in film studies, a position that David Bordwell disputes.