Contributor(s): Professor Wlodek Rabinowicz | Pragmatic arguments for rationality constraints on a decision maker’s beliefs or preferences show that disobeying such constraints makes one vulnerable to exploitation. Wlodek Rabinowicz will suggest that the proposed exploitation set-ups share a common feature: roughly, a constraint violator can be exploited only if she decides on various issues separately rather than in a unified manner. Some measure of disunification is a part of the human condition. Pragmatic arguments identify safeguards of a disunified mind. Wlodek Rabinowicz is a professor of practical philosophy at Lund University and LSE Centennial Professor in the Department of Philosophy, Logic and Scientific Method.