Davos is a well-rehearsed event and everyone knows the part they should play. Business and political leaders gather each year to tackle the major challenges of a global economy while the rest of the world, or those of its citizens who are interested, look on from afar. But this year, for obvious reasons, things are different. The notion of leadership has been coupled in the public mind with that of responsibility. The tone here is a little more humble and the attitude more open-minded. There’s a recognition that new thinking is required. A suitable time, perhaps, to turn the tables on convention and have Davos delegates ask the questions they can’t answer and for global citizens to offer solutions.