 when a patient becomes aware of, you know, I'm not walking normally, or I'm having these weird hallucinations in some cases, or, uh, I've got a tremor in my left hand and I can't seem to stop it. Well, yeah, it's not, you don't take a blood test and it comes up like you got gonorrhea. You have Parkinson's. There are a number of, of tests that you undergo in,