STEPHANIE LAND HAD ALL BUT GIVEN UP on becoming a writer in 2015. She was like many of the subjects who appear in articles about the poor—a single, thirtyish mother of two little girls from Missoula who worked long hours as a cleaner and collected food stamps. To pay for pizza dinners, she bounced checks. She earned $10 per hour posting ads for local businesses on bathroom stalls of bars, with the infant strapped on because she couldn’t afford childcare. At one point, her family lived in a shelter.