If architecture is a form of conversation between a space and its inhabitants, to paraphrase Usman Haque, then the conversation between Haque and Adam Greenfield at Space Studios in Hackney was practically Victorian in its flourishes and monumental aspirations. Like the massive ribcage of old steel forming the roof of St. Pancras rail station, this two-hour-long conversation enclosed a twisting, arterial jumble of ideas including the politics of data gathering; the psychology of groups; the usefulness of collective action; the organizing principles of cities; the near-extinction of modern architects.