Answer:
Because the people in that car their lives are in your hands
Explanation: all it takes is one tiny wreck
This website has information on forms of Human observation to be pretty broad. It doesn't have anything specific with Bolivian villagers or there looms.
http://www.psychologydiscussion.net/behaviour/7-methods-of-studying-human-behaviour/540
If youre taking about a book you can use "the reader"