Depending on which historian you believe, modernism ended somewhere between 1950 and 1980. For those of us who grew up in the 1960s a radical was a political protester. But, Charlotte Jackson Fine Art in Santa Fe specializes in radical art which has nothing to do with politics. Radical art is related to the roots or origins of art. It can be abstract, atonal, monochromatic, concrete, non-referential and fundamental.
Radical art can form the foundation or basis for extreme change from accepted traditional forms.
Hegel meant the spirit of the age that was supposed to ensure a homogenous quality in art, science, literature and music during a particular period. His view was that synthesis was the highest order of truth. As we exit the twentieth century our zeitgeist is lost somewhere in a sea of words, ideas, opinions, cyberspace travel and bollixed Mars missions. The next time someone catches you in front of something indescribable in a gallery, just pause and slowly take a half step back. They'll never know how confused you are.