"New Yorkers are capable of riding a subway train without noticing a man shaving, an old woman undressing, or someone speaking in tongues right across the aisle. They do not act surprised or get caught up in the happenings around them, preferring to mind their own business on their way to work. They will ignore you, your problems, and your oddities unless you ask them to get involved. Then they jump in."
Claudia Osborn, Over My Head