On the Edinburgh fringe you're never too young " or old " to do standup
An anarchic 82-year-old and a one-liner star aged 13 will go on stage with very different actsAt the back of a double-decker bus parked in the bustling heart of the city, two comedians sit discussing their careers. Even for the Edinburgh festival fringe they make an unusual sight " Grace, 13, is the youngest comedian taking part; Lynn Ruth Miller, who is pushing 83, is the oldest.Compare and contrast. Lynn shakes her…