Twelve months on from the collapse of Lehman Brothers and much about the event remains mysterious. It was the trigger that caused a deep recession, which began in the US but steadily crept across Europe and Asia, morphing into a global catastrophe worthy of a potboiler novel.
A notable phenomenon of this past year of living dangerously in financial markets has been the triumph of the ultra-bears. Deeply pessimistic commentators such as Nourel Roubini who were previously unknown or had only niche followings have been propelled to rock star status.