'Dialogical Estoppel: As can be seen, the heart of the idea behind legal estoppel is the idea of consistency. A similar concept, “dialogical estoppel,” can be used to justify the libertarian conception of rights, because of the reciprocity inherent in the libertarian tenet that force is legitimate only in response to force. The basic insight behind this theory of rights is that a person cannot consistently object to being punished if he has himself initiated force. He is (dialogically) “estopped” from asserting the impropriety of the force used to punish him, because of his own coercive behavior. This theory also establishes the validity of the libertarian conception of rights as being strictly negative rights against aggression, the initiation of force. The point where punishment needs to be justified is when we attempt to inflict punishment upon a person who opposes the punishment. Thus, using a philosophical, generalized version of “dialogical” estoppel, I want to justify... - Adam Crowe