Agency is a notion that brings together a variety of concerns that currently echo in diverse segments of the architectural debate. This article, in the form of a conversation, addresses this multifarious notion and attempts to bring to the fore points of intersection between agency-related concerns too often perceived as disconnected. The article has been assembled out of separate interviews with three prominent scholars who have, from different fields, made particular contributions to this theme: Antoine Picon, historian of architecture and technology; Scott Lash, professor of sociology and cultural studies; and Margaret Crawford, professor in architecture and urban studies. This conversation interrogates agency theoretically, and does so ...