WELCOME TO NO HARM DONE! In this episode, Jones and Balding revisit the thorny and vexed area of quality measurement – but this time we have the good sense to call in the experts – well, one expert, anyway. Cousin David joins us – that’s David Balding, Professor of Statistical Genetics at the University of Melbourne, and Director of Melbourne Integrative Genomics. We think he’ll keep up! QUALITY QUANDARY: Are we as good – or as bad – as we think we are??? We discuss Don Berwick’s recent rant about measurement and get an outsider’s perspective on whether we’ve got it completely wrong or not….