[bert]

Biden’s problem is rate of cognition.

That his he has lost instantaneous memory and when under stress and speaking publicly his brain inserts something inappropriate for the instantly needed word.

His brain has lost the ability to keep up with his mouth speaking rapidly. The correct word is there but has become instantaneously unavailable

[hcmama]

I think it is more than that. What you described is a natural consequence of aging (even Trump does it at times). This is a rapidly advancing cognitive decline.

[gbscott]

“That his he has lost instantaneous memory and when under stress and speaking publicly his brain inserts something inappropriate for the instantly needed word.”

A lot of us have this problem (seriously!) but we aren’t trying to run for President either! From what I can see President Trump is having none of these problems!

[LibertarianLiz]

when under stress and speaking publicly his brain inserts something inappropriate for the instantly needed word.

So, like calling a young woman who asked a question a "dog-faced pony soldier"?