This article critically addresses current debates on the digital transformation of the public sphere. It responds to two contrasting responses to this transformation: the school of destruction, which expresses pessimism about the design of social media, and the school of restoration, which advocates for the redesign of social media to align with normative conceptions of the public sphere. However, so far these responses have omitted an explicit philosophical reflection on the relationship between politics, technology and design. After tracing back the (...) current discourse on politics and technology to the Platonic tradition of political thought, I propose to re-arrange the relationship between poiesis, praxis and theoria assumed in this tradition. By connecting Arendt’s phenomenology of the political to postphenomenology and Derrida’s notion of ‘artifactuality’, this article proposes a renewed approach to think the political implications of technological change consistent with the ‘empirical turn’ in philosophy of technology. This approach unfolds in two moves: first, it examines how the design (poiesis) of new technological conditions makes space and time for certain kinds of events to become public; second, it takes the praxis emerging in response to these new conditions as a starting point for re-theorizing the political in specific mediated contexts. The article concludes by advocating for a ‘practical turn’ in political theory of technology, emphasizing the importance of engaging with design practices and artistic practices to refine foundational concepts in political theory. (shrink)