Professor Zachary Schrag is a historian of the twentieth-century United States and a professor of history at George Mason University. His specialities are: history of technology, policy history, transportation history, urban history, and oral history. In this episode, we discuss what history means and his book, the Princeton guide to historical research. Key points include: 01:40: History as the study of people 07:23: Internal contradictions 19:48: How a historian organises information 30:04: Recommendations for history students 37:26: History’s influence on politics Unleashed is produced by Umbrex, which has a mission of connecting independent management consultants with one another, creating opportunities for members to meet, build relationships, and share lessons learned. Learn more at www.umbrex.com.