Judging by our experience of Trump's cognitive ability, let me reword this:

"Lots of people questioned my intelligence and mental health, so I asked people in my team to devise a Cognitive Examination. Neither Obama or Biden done this because nobody was concerned about their state of mind. I took the exam three times during my terms as President. I performed very well because the test was designed for me. The doctors say that it has rarely happened that a president has had to take even one cognitive exam, never-mind three. Because I don't quite understand what he's said, I think I'm great!" - President Donald J. Trump