When writing on a sheet of paper with a piece of pencil, it is close to impossible to see the image of one’s reflection on that sheet of paper. One may even be writing in an attempt to articulate said image.
On a type writer, the keys may shine enough to offer glimmers of a distorted mirror.
With a computer, it takes just the right angle to avoid seeing oneself. Sometimes regardless of the brightness one cannot avoid staring past the screen into this unwanted makeshift mirror.