Once one understands the nature and magnitude of defuturing as the negation of world futures, how one has to account for the history and making of the material world - including design - dramatically changes. Defuturing as our condition forces the generation of a new philosophy of design. With these thoughts this book presents a radically new understanding of the history, context and futures of designing. First published in 1999, now reissued with a new preface by the author, Defuturing: A New Design Philosophy is a prescient and powerful account of what it means to comprehend that we live in world that is taking away futures for ourselves and non-human others. Arguing that designing is doubly implicated in this process, first in its roles in helping to create the unsustainable, but second, re-thought through the lens of defuturing, as a mode of acting in the world that can help contest the negation of the world, Defuturing transforms our comprehension of designing and of how futures can be constituted. Working not through abstract theorizing but through the analysis of concrete examples, the book uses historical material on design to expose the archaeology of defuturing. Shattering the illusion that the future simply is, Defuturing confronts designing with the challenge of remaking while offering the elements of a new practical reasoning of design acting.