Where does this come from? The web page seemed to indicate that (a) IQ is malleable and (b) knowing this helps people get smarter. And this makes sense. I've had so many people in my life say "oh, don't bother explaining that to me, I can't learn it". I really hate that. The only thing stopping them is their own belief.

Do you think IQ is something fixed? That you can't continue learning and getting smarter?