 Joe Biden, should he take a cognitive exam, as George Stephanopoulos brought up? And he said, I don't need to do it because I get tested every day. Max Lou Revere is here, health and science journalist, bestselling author and host of the podcast The Genius Life. And go pick up his documentary or download it, Little Empty Boxes, at littleemptyboxes.com. Do you have any idea, this might be, when people want to take a cognitive exam, do you know what that would consist of or what that would reveal?