A Symposium Ana Miljački, Mario Carpo, Alexander D'Hooghe, Cristina Goberna, Urtzi Grau, Eric Höweler, Timothy Hyde, Florian Idenburg, Sam Jacob, Michael Kubo, Amanda Reeser Lawrence, Michael Meredith, Hilary Sample, Nader Tehrani, Enrique Walker, Ines Weizman, Meejin Yoon, John McMorrough. The Under the Influence book is based on the eponymous symposium, which brought together scholars and practitioners of architecture in order to focus on one of the most anxious disciplinary topics: influence. The symposium invited each of the participants to illuminate a single term —a disciplinary synonym for appropriation— and through that term, the specific strategies, historical, and disciplinary circumstances in which it is enmeshed. It was organized and hosted by Ana Miljački, and presented by the MIT Department of Architecture. With some small additions this is a reprint of that book. Influence is not easily quantified. It is elusive, even when we casually admit to it as we ogle images on the internet,