> “The single strongest predictor of economic mobility across areas is the fraction of higher-income friends that low-income people have,” Chetty told me. “In c

> “The single strongest predictor of economic mobility across areas is the fraction of higher-income friends that low-income people have,” Chetty told me. “In communities where you have more cross-class interaction, kids do much better." https://archive.ph/2026.01.29-172547/https://www.nytimes.com/2026/01/28/opinion/american-dream-poverty.html https://archive.ph/2026.01.29-172547/https://www.nytimes.com...