You know, I qualify for Mensa, but many times the dumb people I talk to in my very technical field dont understand what I am saying, and they think I'm dumb. They think they are smart, but solutions that take me 30 seconds to calculate out a complex solution takes them months to come to the same conclusion. Sometimes the dumb only claim to be smart becuase everything is so far above thier head, they ignore it and move on, while the rest of us research and learn, dont pretend to know everything.