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.
Interesant e că Sarah Brosnan, care făcuse asta cu cimpanzei, avea vreo două perechi de cimpanzei în care, într-adevăr, cel ce primea struguri refuza strugurele până când și celălalt primea strugure.