Now the funny thing is that Sarah Brosnan, who's been doing this with chimpanzees, had a couple of combinations of chimpanzees where, indeed, the one who would get the grape would refuse the grape until the other guy also got a grape.
Det sjove er, at Sarah Brosnan, der har gjort det med chimpanser, havde et par kombinationer af chimpanser hvor, minsandten, den ene der ville få vindruer ville afvise vindruerne indtil den anden også fik vindruer.