A chart displaying the scale on were good and bad art relate to each other.
Contemporary, experimental art fails often by virtue of the risk-taking involved in the artist’s choices. Hence, the final product can be disastrous or genius but both results more often closely related than one might initially suspect. Relying on more accepted conventions places the art somewhere in the “shades of mediocrity” between the two polar extremes. Thus there is a small window on this scale for “good art”, which is also the most perilous area close to “bad” or “confusing”. Sometimes, there is no discernible difference between the three for critics and the general public.