[Joe Bfstplk]

People are supposed to gain knowledge, throughout their lives; however, sadly, not everyone does.

<<>>

When you are dead, you don’t know
That you are dead. The difficulties
are for the others.

It is the same when you are stupid.

[nopardons]

Ummmmmmmmm...are you sure that people don't know that they are dead/dying/almost dead/that they've died?

OTOH...the last bit is true; stupid people often don't realize just how stupid they are. And age matters not one whit.