Our age is obsessed by the idea of conspiracy. We see it everywhere-from Pearl Harbor to 9/11, from the assassination of Kennedy to the death of Diana. In this age of terrorism we live in, the role of conspiracy is a serious one-one that can fuel radical or fringe elements to violence.For award-winning journalist David Aaronovitch, there came a time when he started to see a pattern among these inflammatory theories. He found that these theories used...