Art as Performative Enactment

I found the idea that "intermedia only exists or comes into being as such through the interaction between objective elements and the subjectivity of the viewer" to be interesting. I have always found the subjective side of the viewer to be extremely important in all art, but never realized how crucial it is in a performance piece. It would never have crossed my mind that in a performance piece "the point is not a theoretical one imposed retrospectively, but is rather given immediately and necessarily in the act of viewing". I feel as though this can make a performance piece simpler, in the sense that the piece must be simple enough for the viewer to be able to grasp the entire concept in real time. However, at the same time this makes giving the piece meaning much more difficult because it can never be too detailed or too subtle. Achieving a balance between the artist's subjective-interpretation of his work and the interpretation that the viewer makes of the artist's work allows the viewer the opportunity to take in all the information and process it simultaneously. 

The link I am posting is a performance art piece by Tony Orrico

http://www.youtube.com/watch?v=7vldw0qs3A8