 And that's what gives you the diagnosis. Because it's so clinic, there's very little others. And I'm a Democrat, I always say about this. Yeah, right. It's just like, this guy is not a hard case. But I've had relatives who have gone through issues, neurological issues. And I've heard that sometimes Parkinson's is not very easy to nail. You have to take a lot of tests. I mean- Early on, if you're just present with hallucinations, that could be a variety of things. Or just the cognitive problems, that could be Alzheimer's versus Parkinsonism. And that becomes a little nebulous.