I’ve been at the Venice Biennale for a day and a half. I’m just getting over latecomer’s remorse, brought on by my having skipped last week’s press preview and the opening hoopla. In other words, I missed the international bigwigs, artists, dealers, curators and thousands of art-world worker bees. While I was crossing the Atlantic on Tuesday night, many of them had already decamped for Basel, the world’s best art fair.