If the peoples of the world are to maintain, let alone further improve, their current lifestyles, policy makers, including central banks, must not let the various currents unleashed by the Crisis threaten the foundations of an affluent society.
In an ideal world, if we could understand and model why you decided to have latte instead of espresso this morning, it could be possible to design an automatic stabilizing mechanism for the economy, and central banks would become only a chapter in economic history books.