On Thursday evening Rem Koolhaas and Hans Ulrich Obrist spoke at the New York Public Library with NYPL Live Director Paul Holdengräber . After an introduction by Holdengräber, Koolhaas and Obrist gave brief presentations on their book Project Japan: Metabolism Talks . The three then engaged in a conversation that focused on the book, but which meandered into other territory, such as manifestos, film, libraries, and the act of interviewing itself -- Obrist is known for his marathon interview sessions held at the Serpentine Gallery , where he is Co-Director. Below is a transcript of a small portion of the conversation after a brief recap of the presentations. The evening reached nearly two hours from when I turned on my recorder to when I hit the stop button. [Celeste Bartos Forum | Photograph by Jori Klein] Holdengräber introduced the two participants with the seven words he asked from them to define themselves: Koolhaas: "mystic, rational, sober, baroque, patient, immediate....