Design through the looking glass

What they do is test it virtually, in order to tell the doctor what he needs to do for the patient. You don't want the doctor to open you up and say, OK, what do I need to do here?'. They provide the virtual capability, so a doctor operating on your knee, before he goes in, knows exactly what hardware he needs to put in," Michael Grieves describes the use in healthcare of a digital twin, the concept he developed more than a decade ago. Although he first proposed the idea in 2003 as a way of developing products more cheaply with the help of computer models, it has since found wider uses.