Liverpool’s Biennial is about to begin. But will the event have a culturizing effect on the city? “Culture is not a cure-all medicine for a city that has been in decline for 50 years. Of course there are economic benefits. But if you say it’s only about that then expectations start heading off in the wrong direction. And the actual difference made by culture is hard to gauge. Sometimes Liverpool looks less like a capital of culture than a culture of capital.”