Beware the politician posing as a scientist
One of the fond delusions of our age is that scientists are a breed apart from ordinary mortals, white-coated custodians of a mystery, with authority to pronounce on any scientific issue,,however far removed it may be from their own field of expertise. A shining example was the status given to Sir David King, who has just retired after seven years as the Government’s Chief Scientific Adviser. In 2000, when he was appointed just before the foot-and-mouth crisis, Professor King’s speciality was ‘surface chemistry’. Yet almost immediately top of his agenda was the need to fight an animal disease.