Much of medicine is about information - the data that helps doctors make the right choices about our treatment. So how will the revolution in big data impact complex heatlhcare systems like the NHS? In a world of smartphones and messaging, will we need to sit in the GP's waiting room surrounded by other people with their coughs and colds - or will patients fight for the right to maintain a personal relationship with their doctor? With the rise of the robots - should we be trusting humans with their shaky hands to slice us open, or is it time to hand over the scalpel to the machines?