 But you need to think about range of motion, restrictions, and those types of things. So, Brad, let's talk about the fact that you need to talk about the mechanism of injury. You need to be able to prove the mechanism of injury. So what does that really, really mean? What it really means is you have to figure out why that particular part of your body is hurting, what happened in the crash so that that part of your body or some related part of your body that can lead to injury.