Columbia GSAPP student Jarrett Ley speaks with Sir Peter Cook, one of the founders of the radical experimental group Archigram, on the occasion of his lecture at the School. In this sixth episode of GSAPP Conversations, they discuss architecture as a tool for shaping radical thought, the relationship of the current political climate in Britain, Europe, and the United States on architectural education and practice, and how the most interesting new architectural projects seem to come from unknown architects in smaller countries.