It's time for an update on the British art world, which, as far as I can tell, exists mainly to provide me with material. As regular readers of this column are aware, British art institutions have taken to paying large sums of money for works of art that can only be described as extremely innovative (I am using ''innovative'' in the sense of ''stupid''). Here are two examples that I've written about: • An artist named Martin Creed won the prestigious Turner Prize, plus 20,000 pounds (about $30,000), for a work called The Lights Going On and Off, which consisted...