The pioneering work by Pierre Janny and Nils Lundberg added a new tool to the investigative armamentarium of the neurosurgeon: continuous monitor ing of intracranial pressure (ICP). A small group of basic and clinical sci entists recognized the importance of this method and in 1972 an International Symposium was organized by Mario Brock in Hannover, Germany. The workers "of the first hour" had high expectations and thought that the problem of intracranial hypertension could finally be dealt with. The Symposium con tinued to grow during subsequent meetings in Lund (1974), Groningen (1976) and...