Where does it hurt?
Not sure why I'm fascinated by this study. Maybe it's the 98% slot-filling rate. Maybe it's the notion that out-of-grammar responses are 7 times more likely for types of pain than for body parts (yeah, think about that...) Maybe because it's a well-written paper that applies dialog techniques and metrics in a sensible and effective way. Or maybe it's just an app that I would like to call, every so often.
