The Donkey Won't Understand One Plus One Equals Two

All mathematical proof hinges on personal, intuitive understanding. If you try to tell a donkey that one plus one equals two, the donkey won't get it. Not because the donkey is stupid, perse but because there isn't that intuitive leap. In a sense, for a donkey to be able to recognize his own face in the mirror, a mystical insight needs to occur - which us humans take for granted.