 Is there a lot that can be done with treatment these days for someone who's in Biden's position, who's trying to still function at a particularly high level? Or are the drugs pretty limited in their effect? So, right. It depends on which diagnosis it is. Correct. So patients with Parkinson's disease, for instance, and we're and I'm talking about idiopathic Parkinson's disease primary, not not the secondary Parkinsonism.