'Summer of Love: Art of the Psychedelic Era,' the Whitney Museum's 40th-anniversary trip down counterculture memory lane, provides moments of buzzy fun, but it'll leave you only comfortably numb. For starters, it may be the whitest, straightest, most conservative show seen in a New York museum since psychedelia was new.

Abstraction brings the world into more complex, variable relations; it can extract beauty, alternative topographies, ugliness, and intense actualities from seeming nothingness.

Turns out Picasso's passion for uncertainty, mystery, and the thrill of life never ended.

The German ueber-photographer Andreas Gursky was the perfect pre-9/11 artist.

Artschwager's art always involves looking closely at surfaces, questions what an object is, wants to make you forget the name of the thing you're looking at so that it might mushroom in your mind into something that triggers unexpected infinities.

'Untitled' is a time machine that can transport you to 1992, an edgy moment when the art world was crumbling, money was scarce, and artists like Tiravanija were in the nascent stages of combining Happenings, performance art, John Cage, Joseph Beuys, and the do-it-yourself ethos of punk. Meanwhile, a new art world was coming into being.

I don't plan out my visits rigorously, but I do have a list of about 125 New York galleries, alternative spaces, museums, and so forth that I visit regularly. That's the closest thing I have to a strategy: I go to a lot of places, many that artists don't visit.