Well, plenty of people scoffed at Ray Bradbury when he said that someday people would walk on the moon- he was at a cocktail party, and he took down the names of people who laughed at him, and when the US landed on the moon, he called them up and reminded them that they had laughed at him.
Scoffing isn't about brains.
Although it can be- just ask Galileo and the smartest people of his time.
-kv