The last time I was on TV, I said that I saw evidence of organic brain disease in Reagan's behavior. Everyone else on the panel condemned my comment. Three years later, Nancy wrote a letter about Reagan having Alzheimers. From what I have seen of Biden, there does seem to be a slippage and inability to focus on the point at his weakest moments.
You don't need to believe me but those who saw the Biden debate debacle are going to believe their eyes, not their lying eyes.

btw Trump now has 3 airplanes (2 Air Force one and his own plane)
He does not need 30 planes any more than a girl needs 30 dolls.

Boys who have Hot Wheels cars won't have just three. They most likely have damn near a hundred. There seems to be a gender bias regarding the number of toys.