TY - JOUR A1 - Seligman, Stephen T1 - Toward Post-Cartesian psychoanalytic theory. Commentary on paper by Bruce E. Reis JF - Psychoanalytic Dialogues, Vol. 15 (2005), pp. 285-319. N2 - Nonlinear dynamic systems theories offer useful approaches for understanding psychoanalyses: One of the most distinctive and appealing features of psychoanalytic thinking is its focus on mental processes that defy categorization and linear explanation. Analytic therapists tolerate uncertainty, find meaning in apparently disordered communication, and embrace the unexpected twists and turns that emerge from intimate attention to the ordinary complexities of everyday life. These are hallmarks of a psychoanalytic sensibility that spans various theoretical persuasions. Non-linear dynamic systems theory embodies the same sensibilities: It emphasizes such descriptors as pattern, complexity, flux and flow, the interplay of ambiguity and order, stability and instability, and the natural value of uncertainty and generative chaos. Although systems theory may appear esoteric and overly intricate, it can be approached in an intuitive, experience-near way so as to offer a language and an imagery that underlie everyday clinical thinking. Its metaphors and aesthetics can help analysts become more precise, spacious, and immediate about basic assumptions that tend to be taken for granted. In addition to tracing this conceptual path, this paper provides a brief account of the history of nonlinear thinking in psychoanalytic theorizing and offers clinical examples. Y1 - 2005 ER -