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.
Tani gjëja qesharake është që Sarah Brosnan, e cila kishte realizuar këto detyra me shimpanzetë, kishte disa kombinime të shimpanzeve ku, vërtet, ai që do të merrte rrushin do ta refuzonte atë derisa partneri tjetër të merrte rrush po ashtu.