 This is obvious. Anybody could diagnosis if you have any medical knowledge at all about Parkinson's. You know, if you're a doctor, you know, these are the signs of Parkinson's. Well, then if he has it, then the next thing is, well, then do we know when he's not when it appears he's not thinking right? Is he or is he not? The only way you can tell that is through a cognitive test. Yeah, right, right.