<p>At 6th Ave, on the L. The doors sit open; we're blocked by train traffic.</p> <p>A man, seated, perks up surprised and shouts a name muffled by my iPod. He bustles out of the train, gives the named woman a handshake and a hug. A few gestures later the wander off down the platform. Random encounter worth changing plans for? Absent-minded rider-man? Confused meeting point?</p> <p>Who knows. City livin'. </p>