What are the signs you are seeing of that?
(There’s a well-known meme of quizzing people on whether celebrities are dead or alive, so I wouldn’t take one Paterno slip as necessarily being a sign.)
Another one was that David Duke thing. He knew who a Duke was. The day before he’d denounced him. Then the next day he didn’t know who he was.
Saying the same thing over and over is consistent as well.