Four blind folk are in a room. They are asked to describe what is in front of them. One man says, "A tree". Another, a woman, says, "A snake". On and on. There is a fifth person in the room who declares, "You are all wrong. It is an elephant."
My position is that this fifth person is as blind as the other four, and draws the wrong conclusion. His declaration seems to make sense, but there is really no way to be sure, is there?