I remember this video from when I was a kid. I will always upvote it. It also seems a bit weird that it was produced by the office of Charles and Ray Eames (designers whom most people probably know from their iconic chairs from the 1950.) It seems that producing educational videos wasn't too far out of the lane for an industrial design house in the 70s. When was the last time Frog produced a video like this? Or Hubert? Or Manz? Can't remember if Vignelli's studio ever did videos.