By the time I spotted my daughter’s sedan in the far corner of the Whole Foods parking lot, the sun was already dropping behind the shopping center and turning the windshield into a sheet of dull orange fire. At first, I thought she was waiting for someone, maybe finishing a phone call or trying to get a stubborn child to nap before driving home to the suburbs.

Then I got closer and saw the thin fleece blanket in the back seat and the tiny sneakers on the floorboard next to a pile of toys. My grandson was curled up with the cramped, defensive stillness of a child who has learned to sleep wherever the world allows it.