simple this test is. It would make a great ad, in fact.

You draw the face of a clock to a particular time, like "quarter to eleven."
You have to be able to differentiate between animal shapes, like tell the difference between a giraffe and a rhinoceros.
You have to recall and repeat a few words or numbers: "Refrigerator. Bed. Radio. Swimming pool."

Biden would laugh his way through it in a minute or two, and the entire world could see what Trump is bragging about 'acing.'