There's been a transformation in the West about what it means to be a grown up. There used to be scripts to follow, and markers to meet which would mean you're an adult. But those scripts have been thrown out the window, and now it's confusing for young people to know if they've entered adulthood. My guest today takes us on a whirlwind tour of modern adulthood, going back to the 1500s. His name is Steven Mintz, and he's a professor of history at the University of Texas.