Two blind people were examining an elephant. One of them felt the trunk and concluded, "An elephant is a kind of snake." The other felt the leg and concluded, "An elephant is a kind of tree."
Later on, one blind biblical critic came to examine the elephant. First he felt the the trunk, then he moved over and felt the leg. He puzzled for a while over this contradictory evidence, but then reached a brilliant conclusion. "Aha! There must be two elephants in the room. One of them is a snake, and the other one a tree!"