On Thursday, November 26, the Argentine architect Enrique Walker gave at the conference room Búho of the School of Architecturelecture degree scroll "Manifiestos retroactivos", in which he explained the ideas included in the text with the same degree scroll that is part of the book "Tras el manifiesto", edited by GSAPP and ETSAUN.

Professor of Architecture at Columbia University, as well as director of the Master of Science Advanced Architectural Design program, in his visit to the School of Architecture, Walker also spoke about the ideas of architect Koolhaas, included in the book "Learning from Las Vegas" (1972).

Enrique Walker, also, took the opportunity to talk about the book"Delirium of New York" (1978), "where Koolhaas" -according to Walker himself-, "submits to the assertion -or the paranoia- that Manhattan was deliberately projected, that it was the result of a manifesto that, in order to materialize, had to be kept secret".