“When Eva Schachinger married at 22, she applied for public housing. Luckily, she lived in Vienna, which has some of the best public housing in the world. It was 1968. Eva was a teacher, and her husband, Klaus-Peter, was an accountant for the city’s public-transportation system. She grew up in a public-housing complex in the center of the city, where her grandmother, who cared for her from 6 in the morning until 6 at night, lived in one of five buildings arranged around a courtyard. Eva played all day with friends from the complex.”