Reusable packaging systems deliver cost- and environmentally-friendly option
In the videogame series Guitar Hero, the Rock Meter uses a needle to show how well the user is playing. The needle will move in the meter’s three regions: green, yellow or red, with green being the best. It is up to the player to keep the Rock Meter’s needle up in the green area for the entire song. If the player lets the needle drop to red, the crowd will boo them offstage before the song concludes.
While it’s not always used in terms of rocking, the idiom to “move the needle” describes how a certain action has a measurable outcome.