Together these elements formed a new vocabulary with which he explored a "return to realism" in a production of Gogol's "The Government Inspector" as soon as "The Blue Bird" had opened. At a theatre conference on , Stanislavski delivered a paper on his emerging 'system' that stressed the role of his techniques of the "magic if" (which encourages the actor to respond to the fictional circumstances of the play "as if" they were real) and emotion memory. He developed his ideas about three trends in the history of acting, which were to appear eventually in the opening chapters of "An Actor's Work": "stock-in-trade" acting, the art of representation, and the art of experiencing (his own approach).