 I've known that in some cases the person can be greatly helped if they do the very thing that bothers them and they become desensitized to it so that it no longer has that effect on it. We're not talking about doing something bad, but if it bothers somebody to touch a scratchy surface, let's say, then the more exposure to the scratchy surface, it seems, sometimes can desensitize them and they're no longer bothered by that. Have you run into any of that kind of...