Heidegger's account of the dissolution of Western metaphysics in planetary technological understanding is the philosophical basis of this book's critical account of post-war developmentalism as the ahistorical, violent, calculative, individualistic and unjust concretion of technological understanding in the global south. This chapter argues that such an account of developmentalism calls for a positive idea of development, which can conceive flourishing human existence without endangering the fate of the planet and of non-human animals. The argument is not deep ecological but is nevertheless post-technological. Accordingly, development is understood existentially as a dynamic process of human ascent from a less to a more fulfilling human condition. However, such a condition is also understood to be alert to human fragility, finiteness and, thus, to restraining the defeatist possibilities of human freedom. Critically considering the progress of developmentalism, human ascent thus comes to mean living with the needed, relinquishing the unneeded, finding fulfilment in less resource intensive forms of life and achieving this without the fascist politics of human equality and radical ecology. The sense of development evoked by this study also calls for a posthuman sense of dwelling on the earth. Understood as the openness for the circulation of the meaning of beings, human beings and their communities care for, preserve and let beings be. Post-technological human comportments demand openness for the manifold meanings of phenomena as opposed to their technologically organized uniformity. The chapter ends with a plea for communicating development from a post-technological perspective.