 What do you make of that, Dr. Appel? Sure. So President Biden is alluding to two different phenomena. There is a formal set of cognitive tests. They usually take about four hours. One could administer neurocognitive psychological testing. That would give us a very good sense of the president's cognition. That is not standard of care in any 80 or 81 year old. Something more basic like a false mini mental or a mocha that I believe Donald Trump has said he had. I really don't tell you very much about higher order functioning.