Visualise this. A young man with a boyish moustache walks along an expressway leading out of Delhi, one arm wrapping a child barely a year old to his chest, the other clasping an oddly-rectangular jute bag. His wife, a thin, small-boned woman, walks along, gripping the hand of their other child as he tries to keep pace beside her, taking in the scenes around them blinkingly. She is holding a bag too; it contains a precious cargo of biscuits and water.