Dasani and Nana race to the back of the bus, where the motor keeps the seats warm. They sit pressed together, newly reconciled. Dasani is soon asleep. The little ones watch, thumbs in mouths, as their mother closes her eyes. Every time the bus slows, she snaps awake. On the train, she can doze off completely without missing her stop. How she does this remains a mystery. She lives entirely in the present, wearing no watch and following no calendar. Yet the important things she remembers—the date of her next welfare appointment, the anniversary of her mother’s death. An internal alarm will
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