When you think of it, it's amazing how many changes the game of pinball has experienced since it's original inception. (i.e. - real pins placed on the playfield, to the invention of flippers, EM's to solid states - and now the computers running them all.) Yet someone who hasn't played a game since the 50's could easily step right up and play again like they never left the game. And even more amazing to think we might not have ever seen the game progress the way it has if not for the actions taken & intervention of Roger Sharpe in the mid '70's. It's no wonder that almost every video or documentary surrounding pinball usually starts &/or ends with his perspective & history of the game.
(And as BangerJay pointed out, the interviewer did say Sam Stern - must have been a slip as I believe Sam Stern was Gary's father and founder of Stern Electronics)