The Turner Prize is important because it keeps the art world, the cultural scene awake. Yes. its atmosphere can be too full of art 'luvvies' and 'mavens' and the 'usual suspects' but they're easier to get rid of than the idea - and need - that art and culture matter. They do. They are what we are. What Laure Prouvost's installation entitled: 'Wantee' (punters put a sum total of £22 on her chances of winning, according to Ladbrokes ) demonstrates, too, is that big, bad Mighty London with its critics/punters/experts/buyers doesn't always get it right.