When the bridge main screen had nothing better to display, it defaulted to a view of the stars passing by (probably of zero utility to the pilot or navigator). Decades later, when computer monitors had nothing better to display, they defaulted to a view of stars passing by. 
My God. He’s absolutely right.
“But what does it do?”
“That’s the beauty of it. It doesn’t do anything.”
That’s nothing; you can get your computer to display a gen-u-ine Trek LCARS display.
(One of the two coolest screen savers of all time 
)
Is the other one Flying Toasters?
Whatever happened to After Dark, anyway?
Whatever happens to screen savers that have a help desk.
I have no cite but I remember reading an article years ago where a hospital contacted Paramount studio because they wanted to use the “red alert” sound when a patient coded.