“If this story was a stack of photographs—the old kind, rounded at the corners and kept in albums under the glass and lace doilies of center tables in parlors across the country— it would start with Vivek’s father, Chika. The first print would be of him riding a bus to the village to visit his mother; it would show him dangling an arm out of the window, feeling the air push against his face and the breeze entering his smile.”