Edited by artists John Burtle and Elana Mann, the new book Propositional Attitudes: What do we do now? is an anthology of recent performance scores and instructions meant to blur the lines between spectator and participant. Featuring contributions from Carolina Caycedo, Dorit Cypis, Fallen Fruit, Udita Upadhyaya, and many others, the collected works engage with themes of political organizing and social responsibility, raising difficult questions like: “What societal roles should we...