Realism sets itself at work to consider characters and events which are apparently the most ordinary and uninteresting, in order to extract from these their full value and true meaning. It would apprehend in all particulars the connection between the familiar and the extraordinary, and the seen and unseen of human nature.
The way you would know if someone is famous in the art world is that you would ask your mother. My mother knows who Picasso was. She knows who Warhol was.