Changes

This is contrary to reading a book (which is a chronological action, page after page, scene after scene, like a railroad has stations along the line). It is also contrary to playing most computer games (which usually has a branching structure in the storyline, that you get alternate ways but the interactivity is deciding alternate actions and getting alternate endings. It is not a free choice, it is a limited list of choices in one scene. The Swedish Interactingarts Collective would name this in their book "Deltagerkultur" as Interactivity, but not as Interaction).