Free Online HD on Lookmovie. "Permanent Change" looks at the history and development of plastic within the architectural world. Capturing both a series of lectures and a panel with prominent names such as Steven Holl, Beatriz Colomina and Werner Sobek, this documentation observes detailed examples and lively debates regarding the popularization of plastic as a construction material. Addressing a number of contributing factors including design, engineering and form, the participants of the conference present a wide range of theories, analyses and predictions pertaining to plastics as an architectural material.