Robert Rauschenberg was not a giant of American art; he was the giant. No American created so many aesthetic openings for so many artists.

Many say an art dealer running a museum is a 'conflict of interest.' But maybe the art world has lived an artificial or unintentional lie all of these years when it comes to conflicts of interest.

Biennial culture is already almost irrelevant, because so many more people are providing so many better opportunities for artists to exhibit their work.

Urs Fischer specializes in making jaws drop. Cutting giant holes in gallery walls, digging a crater in Gavin Brown's gallery floor in 2007, creating amazing hyperrealist wallpaper for a group show at Tony Shafrazi: It all percolates with uncanny destructiveness, operatic uncontrollability, and barbaric sculptural power.

I see around 100 shows a month, going from Niketown-size palaces where you feel like yelling, to storefronts in Bushwick. Each has to pay the bills; keep artists happy; and cope with collectors (oy!), curators (ay-yi-yi), critics (woo-hoo!), and occasionally plumbers. That their fiscal life often hangs in the balance only adds to the energy.

Marlene Dumas is one of the two or three most successful female artists alive, if you judge by prices. I've never reviewed her work, because I find nothing in it to get excited about no matter how hard I look.

I see 30 to 40 gallery shows a week, and no matter what kind of mood I'm in, no matter how bad the art is, I almost always feel better afterward. I can learn as much from bad art as from good.