jfruh writes "People who like watching American football on TV have come to take a great technological development for granted: they can see on TV a yellow line that indicates how far the offensive team needs to move the ball to get a first down. The line, which has been used on most football broadcasts for more than a decade, is actually something of a technical marvel, with a lot of work going into creating something that's not flashy or obtrusive but enhances the game-watching experience. Even those bored by sports can appreciate the science behind it." Link to Original Source
We don't know who it was that discovered water, but we're pretty sure
that it wasn't a fish.
-- Marshall McLuhan