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Unlike fundamentalist Christians, who proudly boast that they have to use their holy book to understand what's right and what's wrong, and so bizarrely claim to be more moral than people who don't need a handbook, it seems even chimpanzees understand the difference, either instinctively or through culturally-inherited memes. Ironically, this indicates that this ability may even have been present in the last common ancestor shared by chimpanzees and humans.
This was the conclusion of a team from the University of Zurich, Switzerland, who allowed chimpanzees to