He didn't look like much at first. He was too fat and his head was so big his mother feared it was misshapen or damaged. He didn't speak until he was well past 2, and even then with a strange echolalia that reinforced his parents' fears. He threw a small bowling ball at his little sister and chased his first violin teacher from the house by throwing a chair at her.
That's the first Einstein, of course. Overbye's article is about the search for the next one.