CNN: Uncontacted Tribes

http://www.cnn.com/2008/WORLD/americas/05/30/brazil.tribes/index.html

I guess I never gave it much thought, but it's amazing to think there still exist people that have had absolutely no contact with the outside world, not understanding anything as to the advances of human society.

In one of the article pictures, you can barely make out some of the uncontacted tribesmen staring upward with such curiosity at the plan taking pictures of them below. Is this what the rest of us look like when unidentified flying objects are taking pictures of us? (hahaha... still not so sure I believe in UFO's... but articles like this make me think....)