Eisenman is rejecting the model of Cartesian space and figure/ground contextualism. He is replacing it with the model of catastrophe theory. Catastrophe theory, characterized by sudden shifts in behavior arising from small changes in circumstances, can be used to give another reading or "frame" to the notion of figure/ground. Eisenman states how the idea of figure/ground is static, and dismisses the architectural "event". This concept of the fold allows for celebration of architectural events, can be used to re-frame context, and can allow new conditions to form that may have been repressed or ignored.