While the article carefully refers to 'it' - the photo caption reads 'who's the good looking guy?'

“By understanding this reflection, however, one is able to use the mirror as an instrument to make accurate inferences about the positions of objects in space based on their reflected appearances. When we check the rearview mirror on our car for approaching vehicles or use a bathroom mirror to aim a hairbrush, we make such instrumental use of these mirrors.”

Cool.