So following that strange logic if a dumb person knows he's dumb, he's suddenly become intelligent? Or is that impossible by your peculiar definition of intelligence?
Knowing your limits has to be a sign of intelligence.
"Dumb" people (FTR the description actually refers to something rather than that which you think it does...) run around on the internet getting mad because they haven't thought things through...
Yeah that sounds like wisdom, not intelligence.