• OTOH, many people can’t make heads from tails regarding windows, icons or buttons, and they don’t get the contextual clues that the GUI gives for any operating system. They don’t see them, and if they do they’re unable to make the automatic inferences most of us long time users obtain from them. They act as people who are blind from birth and suddenly see, who have problems to understand tridimensionality; the GUI is not in their mind model of how to work with computers, and they have a lot of difficulty interacting with it.