Andrew Ross Sorkin writes the business and policy newsletter DealBook for the New York Times and is co-anchor of Squawk Box on CNBC. He also has a historical bent, and has a new book out about the causes and consequences of the Great Depression in the 1930s. Sorkin speaks with Michael Lewis about how that crisis differed from the financial crash of 2008, and what we can learn by comparing the two eras.

For more, check out Sorkin’s book 1929: Inside the Greatest Crash in Wall Street History, and How it Shattered a Nation.