Permanence as an architectural concept is no longer restricted to the Vitruvian virtue of firmitas. To think about it in this sense today produces a schism: absolutism in a world of relativism. Inflection Volume 4 extrapolates the permanent and the temporary not as opposing forces, but as a spectrum to be navigated at each stage of architecture's unfolding narrative. Through each of the responses presented in this year's edition, Permanence provides a critical voice as architecture and design continually seek an enduring foothold in an inherently evolving landscape, physical or otherwise. Contributors include Elizabeth Diller, Dan Hill, Casey Mack, Christof Mayer of raumlabor, Tod Williams & Billie Tsien.