http://www.freeratio.org/archive/index.php/t-91450.html
Goodall used to leave bananas out to lure the chimps into her camp. Why she wanted that I don't know. The Alpha and his cohorts would always take every single one. One day a lowly beta named Michael found an empty five-gallon can. He found that by banging it he could make a lot of noise. So he did a massive display, running around, screaming and banging his empty can. When he stopped the tribe saw him as the one who made the evil can go away and his status soared. He got all the bananas he could eat and all the grooming he wanted. There was the beginning of religion.