There was a dreamer, who people thought was a nice guy but a little loopy. He saw a unicorn in the garden and was thrilled, and told his wife all about it. She insisted he was insane, and was very angry, finally calling "the men in the white coats". They asked the man "Did you really see unicorns in the garden?" Seeing the wife foaming at the mouth, he said no. They let him go and took her away. And they all lived happily ever after.
Moral? Don't judge that which you do not know, and don't go nuts when someone sees something you do not. Take it, learn from it. And keep enjoying the unicorns. (Or, the more "grown up" version: Don't froth at the mouth when someone is insane... you'll look worse. Don't make a donkey out of yourself disproving unicorns.