Narrative as Virtual Reality

There were some parts of the text I could understand it was the difference examples of how media is perceived.  Marie-Laure Ryan used metaphors as: Computers as Theatre. The idea of the computer is as if it is a representative of a visual world or system.  It cast the screen as a stage.  The run of the text is seen as a performer and the user as the director as summons the actors.  She said that reading was a treasure hunt that did not build on other knowledge.  So, when we write for cyber media all we need is to understand the textual flow and build upon the text so that it  go in ant direction to complete a story.