![Planet Money show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/080/small/npr-planet-money.jpg)
Summary: On today's show, we meet a self-described robber baron who decided to spend his billions on finger paint and changing tables. We revisit decades-long studies that found preschool made a huge difference in the lives of poor children. And we talk to a Nobel prize-winning economist who says that spending public money on preschool produces a huge return on investment. We'll have more on preschool this weekend on This American Life.