In order to deal with the uncertainty that is inherent. In general practice, many of us use accepted dogmas that we may have been taught as students, and which become incorporated into everyday practice in an unquestioning manner. How do some of these fare when held up to the light of current best practice and evidence based medicine? Some will hold true, others will go the way of many accepted best practices of the past; they fade into the annals of medicine as we move on to newer methods and techniques. This new series explores some of our current accepted practices or sacred cows.