I found this rather difficult to answer precisely. What does intelligence means? To have a high IQ, and what a high IQ means? To be able to make rational decisions, logic assumptions, to easier learn anything you're interested to .. ? Are IQ tests valid pointers of one person 'intelligence'? Could the tests be skewed and invalid, and on what principles and rules are those tests created?
What is the difference between being smart and being intelligent or is it one the same? And could intelligence be associated with education, or intelligence is about using your education in a smart way?
And how would one define stupidity, is it a lack of intelligence, wit, logic reasoning, understanding..?