Steve,
It seems a terrifically valid contemplation. Maybe one way of getting at a perspective is to take a point you made and focus on one word in it, i.e. "opportunity". You said:
"Other forms of art are largely dictated by the limitations and opportunities provided by the various media they are made of. Oils are opaque and viscous, watercolors wet, transparent, and granular, etc. What is digital art?"
Digital art, at least compared to previous media, removes the word "limitations". By comparison, digital art presents nearly limitless opportunities. What we can do is subject only to the limits of our imagination and skill. With enough fiddling, we can make a piece look like anything we want. Digital art, in that context, is an art medium that allows the artist to imagine a desired outcome that can look like any other medium, or something no other medium has ever made possible, and with skill and perseverance, achieve it. In the most skillful hands, using any number of printing techniques available, observing a painting at a typical viewing distance, the viewer may not be able to discern how it was produced. He won't know if it is digitally produced or not, unless of course it is something not likely possible to produce by any of the normally recognized "real" media, though it is pretty astounding what people can do with "real" media.
Another way to think of digital art is as a watershed or transforming event in a cultural convention. People who live during a transformation live with an experience of what was. You and I are living through a transformation. We are inclined, having the past as a visceral experiential reference, as well as a nostalgia for it, to be almost compelled to ask in the context of your statement, "What is digital art?" But people born on the other side of the transformation, growing up with digital art all around them, would not think to ask the question. Someone reading our forum exchange 100 years from now might be astonished that people used to think like you and me, similar to when as a child I read that they used to try to cure diseases by bloodletting.
Those of us who have an investment in the media we spent some time learning to love and master are likely inclined to ask new things to validate our investment rather than to suggest that we may be obsolete. This may be the source of passionate defenses as well as denigrations. But when our generation is long gone, those passions will have gone with us just as the passions of the old Linotype unions in the late 1960's are non-existent when then, people were prepared to shoot people walking across picket lines to run the first cold type machines at major newspaper corporations. I was there for those encounters. Hardly anyone even remembers it now. In retrospect it seems absurd that such passions existed and such events took place.
This might seem a flight of fancy (???). But I think each of these is somewhere in the ballpark even if not home runs. I suppose a simple way of saying it is that we are bound, by human nature, to cling to those things we identify with, and that in many ways identify us. Something that comes along that challenges our identity, and for many people their livelihood, can be befuddling and threatening. My view is that we are in the midst of a technological transformation in how art is produced. It is sweeping aside all past conventions. In another two generations the shift will be accomplished. There won't be people living who would think to have the conversation that you and I are having here. They will be worried that people have found the technological means to simply think of an art idea and have it magically appear on a screen. There will be those who will argue it is not really art because they didn't use a stylus or a touch screen to generate the image.
I know this waxes a bit philosophical. But I suspect standing back, looking with some distance, these notions touch on the discussions about digital vs. real media that sometimes raise the passions. Reasonable people might stand back and wonder what is making the blood so hot. Young people don't have time to be bothered. They are out there doing incredible new things with incredible new things.
Masa mana,
: - )
b