Historically, Hollywood comedy has arrived in skinny envelopes. From fence post Buster Keaton to herky-jerky Jerry Lewis to wiry nerve-bundle Woody Allen to hung-loose Richard Pryor to whippy contortionist Jim Carrey, its comics and clowns have tended to be sliced thin and bendable.

Slashing its way to the finish line, Black Swan is the first ballet movie for highbrow horror fans for whom ballet itself signifies little to nothing. Those of us who know and love ballet can only look on it with a different kind of horror.

What's happening to movie critics is no different from what has been meted out to book, dance, theater, and fine-arts reviewers and reporters in the cultural deforestation that has driven refugees into the diffuse clatter of the Internet and Twitter, where some adapt and thrive - such as Roger Ebert - while others disappear without a twinkle.

Today a celebrity sex video isn't a stigma that requires penance and smarm removal; it's a branding device, a platform enhancer, a show reel.

Historically, Hollywood comedy has arrived in skinny envelopes. From fence post Buster Keaton to herky-jerky Jerry Lewis to wiry nerve-bundle Woody Allen to hung-loose Richard Pryor to whippy contortionist Jim Carrey, its comics and clowns have tended to be sliced thin and bendable.

The whole ecosystem of celebrity has broken down for writers. If you go back to the '50s, '60s, and '70s, writers were on TV a lot, and they were allowed to misbehave a lot. Truman Capote was a pop figure, but it wasn't until he went on David Susskind's show and had that extraordinary voice and manner that everyone could imitate, that he really took off as a figure. Norman Mailer and Vidal, the same thing. The bestselling writers now, there's no great animal energy with them.

It's the contemporary woman that movies don't know what to do with, other than bathe her in a bridal glow in romantic comedies where both the romance and the comedy are artificial sweeteners.