We use cell phones everyday. We look at our phones constantly. Iphone users look at their phones 3x more than normal phone users.
The cell phone uses circuits to power it. It uses waves from cell towers so we're able to call and send messages and stuff. The screen gives off light waves which is what we see when we look at our screens.
We take advantage of technology. We use things without thinking. We learn how to do things fast, but we don't really know how it all works,