The Stack: On Software and Sovereignty. Benjamin Bratton. MIT Press, 2016. 528 pgs. $38 ISBN: 978-0-2620-2957-5 There's a tone of urgency, a comprehensiveness, and a visionary quality to Benjamin Bratton's The Stack: On Software and Sovereignty that I haven't read in contemporary media or political theory since Michael Hardt and Antonio Negri's publication of Empire in 2000.