I had been summoned by algorithm to a screening in older men for abdominal aortic aneurysm. It meant a trip to the Old Kent Road Surgery, a dreary place with a crowded, pinched waiting room and mirrored wall plates – why I wonder: the sick generally don’t wish to see themselves. The nurse doing the screening was cheerful and human. She announced, after applying gel and the ultrasound scanner to my abdomen, that ‘it looks perfect…. and you are not pregnant’. Such encounters make the day.