"Paradoxical conceptual gestures" aka trash.
"But it reflects the dynamic nature of art today and the idea that the creative process that goes into a work of art is the most important thing - the work itself can be made of anything and can take any form." - BBC
Memes made by 12 year olds on the internet today involve more creative process and also express more... and are probably appreciated by a greater number of people too.
My post was just to clear up that the photo was by Stieglitz, the piece by Duchamp. As I recall, Duchamp was a Dadaist at the time.
I find it ironic the original was trashed!