The sneaky smile on the girl's face as she reaches across the tram aisle, lemon tart in hand, to feed her boyfriend squashed into the doorway.
The slight tilt of the businessman's hips as, intent on his phone, he waits for the lift. The light spilling across the domed expanse of the reading room, his unconscious pose perfectly framed.
The phrasing of a friend in the flight of her revelation: a journey of great messiness.
The challenge whispered across the blank page of the year: