Have you or anyone know you know sat for a portrait? In the world since photography, what relevance does the tradition of painted portraiture have? These are questions that the Smithsonian’s National Portrait Gallery would like us to consider. The museum is offering a free event, the Edgar P. Richardson symposium, this Friday (November 17, 9 a.m. to 7 p.m.) on the subject of Today’s Face: Perspectives on Contemporary Portraiture. The morning session features two…