Forget the lottery. One Norwegian has found the way to become truly rich . . . if only for a short while. A banking error led to his account being credited with the equivalent of €1,235 billion. Some windfall. At that rate, even the interest would have come to a tidy €1.65 billion daily. Unfortunately, all good things must come to an end and his time atop the world's rich list was short-lived as the bank discovered the error.