What is the point of a screensaver?
Cathode Ray Tube monitors (CRTs) would often have an image burn permanently onto them and ruin the monitor if the screen wasn’t refreshed every so often. Screensaver software was developed to automatically repaint a new image on the screen. It’s not necessary any longer to have a screensaver with LCD (liquid crystal diode) monitors as the technology is different and images can’t be permanently burned into them. The point of a screensaver now is to display attractive pictures and keep the revenue flowing for screensaver companies. And depending on how you set up the software, it can keep nosy people from seeing what you were working on when you leave your computer.