Mark Grotjahn's large new paintings abound with torrents of ropy impasto, laid down in thickets, cascading waves, and bundles that swell, braid around, or overlap one another.

When museums are built these days, architects, directors, and trustees seem most concerned about social space: places to have parties, eat dinner, wine-and-dine donors. Sure, these are important these days - museums have to bring in money - but they gobble up space and push the art itself far away from the entrance.

Everyone goes to the same exhibitions and the same parties, stays in the same handful of hotels, eats at the same no-star restaurants, and has almost the same opinions. I adore the art world, but this is copycat behavior in a sphere that prides itself on independent thinking.

The last time money left the art world, intrepid types maxed out their credit cards and opened galleries, and a few of them have become the best in the world.

Can space break? I mean the space of art galleries. Over the past 100 years, art galleries have gone from looking like Beaux Arts salons to simple storefronts to industrial lofts to the gleaming giant white cubes of Chelsea with their shiny concrete floors.

All great contemporary artists, schooled or not, are essentially self-taught and are de-skilling like crazy. I don't look for skill in art... skill has nothing to do with technical proficiency... I'm interested in people who rethink skill, who redefine or reimagine it: an engineer, say, who builds rockets from rocks.

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.