Pursuing the call made by Fredric Jameson, in his writing on utopia, to break back into History, this article writes against a popular imaginary which presents the postapocalyptic world as heavily marked by varying forms of incarceration. It assumes as its starting point the possibility of a world without prison, focusing on the conceptual leaps required to more effectively imagine such a world. Drawing on Félix Guattari's The Three Ecologies, the article suggests how the notion of ecology as mapped out by Guattari provides a more useful approach to contesting the role of incarceration than existing critiques focused on prison as economy. Adapting Jean-Pierre Dupuy's notion of time as a project, the article goes on to explore the conceptual steps required to work backwards from a future moment in which today's prisons are rendered incomprehensible ruins.