I keep getting the very scary sensation that absolutelyeverything that I learnt at medical school will one day be proved to be wrong. Well, maybe I'm exaggerating. It's probably unlikely that much will change in the world of gross anatomy. But, when it comes to areas such as therapeutics and management, then few drugs or theories ever survive the onslaught of new research.The last straw seemed to be the recent reasonable questioning of whether lowering the temperature of feverish children is a good thing or prolongs their illness. I may have to add that to the list of activities that took up countless hours of my time in the early years of my career and for which it now appears there is no evidence that I was doing anything other than wasting time...