A pilot ?ying to a distant city needs to check his position, ?ight path and weather conditions, and must constantly keep his plane under control to land safely.TheIfosurveydataprovideadvanceinformationonchangingeconomic weather conditions and help keep the economy under control. To be sure, by their very nature they only provide short-term information. But like a plane, the economy will not be able to reach its long-term goals if it strays o? course in the short term. The Ifo survey data provide the most comprehensive and accurate, - to-date database in Europe on the state of the business...