"Try to turn into a dragon. You run on a resource of some kind, but you don't actually expend it in the ordinary course of operating your dragon-ness, which is damn lucky for you because if you lost more than a drop the result would be instant death," says Miles. "And if it was just a drop I can't quite tell what happens but it doesn't seem to be anything good. All things considered I think I will steer clear of trying to duplicate that state of affairs for myself."