Gorilla Business: Roots of economic behavior studied at zoo

I found this video/article regarding the study of gorillas, symbolic thinking, decision making, evolution and economics to be very interesting. Check it out here:

http://www.boston.com/video/viral_page/?/services/player/bcpid14094180001&bctid=23733761001

http://www.boston.com/business/articles/2009/06/08/franklin_park_gorillas_learn_economic_decision_making_in_study_of_roots_of_human_behavior/