The taxonomic and naive definition of Greenberg is an example of the old tradition, of the victorianism in Art.
Art is Death.
This affirmation is not a secondary subject to be analyzed. The political and economical facts are like art, elements that has to be take into account when we talk about Art-theory. Art like anything, comprehends everything. On the contrary, technology is a medium to do something that for some people can be or not Art. The affirmation about the Death of Art has not its basis on the capitalist societies.