A Mind at Play: How Claude Shannon Invented the Information Age is a biography of Claude Shannon, an American mathematician, electrical engineer, and cryptographer known as "the father of information theory". The biography was written by Jimmy Soni and Rob Goodman, and published by Simon & Schuster in 2017. A Mind at Play is the second biography co-authored by Soni and Goodman, the first being a biography of Cato entitled Rome's Last Citizen.