We ALL make verbal and physical gaffes and stumbles. Old people make them more often.
In no particular order and each of these things happened more than once. Not a single doctor has come out and said he was competent. His own handlers are silent on the subject.
1- frequent wandering off; remember the walk about at the G7 meeting in Italy
2- frequently needed someone to guide him off the stages
3- frequently forgot the names of people even if they were standing next to him
4- needed cue cards & pre arranged questions at his exceedingly rare press meetings
5- did kevin even listen to the Hur tapes? He couldn't remember when he was vp or when his son died
6- he didn't just stumble; he needed special shoes and had to use the little boy stairs on Air Force 1
7- See below; he has no idea what is going on. and no it isn't doctored
https://www.bing.com/videos/riverview/relatedvideo?q=biden+freezes+at+lbqt+event&mid=E086526EDA67C62F91E2E086526EDA67C62F91E2&FORM=VIRE
8- remember the Easter Bunny incident
9-frequently had his handlers end Q&A sessions. Name 1 other president where this happened.
10-had his wife run a cabinet meeting while he was sitting there. When did this ever happen before?