You’ve just moved into the Addison Apartments, introducing yourself to your neighbors. Reaching the first floor, you knock on the door of room 103, marked “Addison.” After a pause, a pair of eyes appear in the mail slot. A man’s voice greets you, “How may I help you?” He hesitates, then says, “Ah, a new face. Let me start over. Hello, new resident of room 501. How may I be of service?”