Since the floor does not manifest as an object form to be admired for shape, outline or profile, often the most sophisticated thing about is that it can be flat. While architects are well - versed in making object form, the floor is a medium of active forms that organize interplay and interdependance with spatial consequence.
(Keller Easterling, Negotiation between gravity and the upright body, in Elements of Architecture, R. Koolhaas)
