You were sitting alone on a bench in a park when you noticed a figure approaching. The man had a wild look about him—hair messy and his eyes darted around as if he was seeing things no one else could.

He stopped in front of you. "Hey, hey, hey!" he said, his voice rapid and excited. "You look like you know something! Yeah, you do, don't you? Something the rest of us don't know! Or maybe you don’t know that you know it, huh? It’s all up here!" He tapped the side of his head vigorously.