The American Dream promises that hard work leads to a better life. But for many children today, that promise depends less on effort and more on where they grow up. Raj Chetty, a Harvard professor and the founder of Opportunity Insights, has spent years following millions of lives to understand what truly drives economic mobility. His findings challenge long-held assumptions about opportunity in America. If the American Dream has started to feel like a coin flip, what’s quietly shaping the o...