Despite these contrasting approaches, the two practitioners did share some artistic assumptions; the 'system' had developed out of Stanislavski's experiments with Symbolist drama, which had shifted his attention from a Naturalistic external surface to the characters' subtextual, inner world. Both had stressed the importance of achieving a unity of all theatrical elements in their work. Their production attracted enthusiastic and unprecedented worldwide attention for the theatre, placing it "on the cultural map for Western Europe", and it has come to be regarded as a seminal event that revolutionised the staging of Shakespeare's plays. It became "one of the most famous and passionately discussed productions in the history of the modern stage."