Eisenman rejects the rigid cartesian math model and figure/ground contextualisim. He states that there is a need for the possibility of reading figure/ground from another frame of reference in order to revel conditions that may have been repressed in the urban fabric. Eisenman supports the position of Leibniz as a non-cartesianist and adheres to Thom's and Deleuze's ideas of the fold. The concept of the fold allows the possibility of refocusing or reframing what is pre-existing in any site which denotes the fold as the aforementioned location of repressed conditions. Eisenman believes this is important because architecture can no longer be bound by conditions of space and place. Figure/ground contextualism ignored the idea of event which can be addressed through the catastrophe theory. The fold helps achieve this by revealing possible relationships between figure and ground, thus breaking up existing cartesian order.