You can convince yourself of this by finding a paper on which words have either been type-set or printed with a laser printer and place it against a computer screen on which words are displayed. It will help the comparison if the paper is folded so that words printed on the paper can be placed immediately adjacent to words displayed on a computer screen. This easily demonstrates that the image on the computer screen is not as easy to see as the image on the paper. There can be a wide variation in display quality among monitors. Higher refresh rates are desirable.
Larger monitors can display more at once - often making work easier.
Adjust the screen contrast so that character definition and resolution is maximized.