Navigation, Participation, Conversation and Collaboration

Chapter 23 begins with the proclamation that "All art is an interaction between the view and the artwork, and thus all artworks are interactive in the sense that a negotiation or confrontation takes place between the beholder and the beheld".  This is a static relationship that while it may influence the visitor's experience, interpretation and perception of it over time, the visitor cannot influence the artwork.  It goes on to say that "digital interactive artworks and performances differ... in the ability of the user or audience to activate, affect, play with, input into, build, or entirely change it."
If a work is not complete without the viewer viewing or experiencing it, then there clearly is an interactivity inherent in the contemplation of a work.  But I would like to highlight that the creator must have the viewer or visitor in mind when creating that work of art.  The question might be asked here on the fundamental basis for creating anything that is: who is the creator creating for?  If the artist is creating a work of art for herself and for the immersive experience of playing with the mind in the act of creation, then there is no consideration for how the viewer will experience it.  Th interaction is between the creator and work being created. 
I know many a musician who does not consider the listener when creating their works.  The pleasure is derived from the mere act of creating and the purpose is to generate a collection of vibrations that are amusing or pleasurable, or conchordant.  But perhaps, this is fundamentally a different kind of art.
In the case of creating digital works, navigation, participation, conversation and collaboration are all an aspect of viewer-based considerations.  In creating works for visitors and participants, I do not think that the "choose-your-own-adventure" style of narrative form will ever become as common in the collaborative style.  Narratives are difficult to piece together on one's one let alone, with a group over time.  I could however see a potential collaboration on a generalized idea that in a kind of "telephone game" the plot is passed along by participants using key words to build a world or a narrative or a story the is added on and arranged by participants.  A kind of Graffitti-in-the-Minecraft idea which is what i guess, really is the current online gaming community. 
Perhaps it really all does come down to the idea of playfullness and gaming in the end.