Incredible Meeting with a Tribe

Look how a tribe is exploring the "Living Dead" visiting their grounds. The Gesture of giving right hand aka The Weapon Hand is given to ensure peace between two parties. How would you act when a stranger comes to you with all kind of thing you never used/saw/knew? 
They seem not to know what a steel knife and a plastic dish are. Well, that's obvious, living in jungle and only knew thing you grew up with only trees and rivers around them, is all they know.
When watching this video it is really interesting how they approach the foreigners and try to understand.

Part 1

 Part 2