Art in the eye of the beholder and all that. Here is a quiz for you.
Half of the pictures are world class "abstract" art. Half are fakes
made by the author.
"Some of the images displayed below are True Masterpieces
of Abstract Art, created by Immortal Artists. They carry
profound meanings, which are, however, beyond the
apprehensions of the vulgar. The rest were produced by the
author of the quiz. They mean nothing."
Maybe the author is a really good abstract artist. I scored 50%.
Maybe the scoring system is wrong. I'm certain that one of my
"wrong" answers was the art in a wall poster that hung in my
dorm room in college.
Here are three of the artistic expressions. Go check for yourself
which are really "valuable" and which are ad hocery: