Ignorance is not stupidity, just lack of knowledge. I've known people that don't have a lot of academic knowledge that could think people into circles. You have to be shown what a water molecule looks like before you can draw it. Maybe they have just forgotten what it looks like because most people have zero occasion to make use of this amazing proof of intelligence. Honestly, what actual good does that knowledge do unless you are a molecular biologist?But the people who did the visual experiment do not even know what water is made of. Isn't that terrible? How can they judge visuals if they can't even draw a picture of a water molecule?
I have a problem with this rationale. It is not a good indicator of intelligence, just training.