Juristic argumentation must in normal cases lead to a positive conclusion. The adoption of the rules of the burden of argumentation is, therefore, necessary. It is the task of the normative theory of juristic argumentation to formulate and to justify these rules., The rules of the burden of argumentation are constitutive rules. They do not impose duties or obligations to justify, but they state under what conditions a thesis counts as justified. The basic problem lies in the second‐order justification, that (...) is, in the justification of the rules of the burden of argumentation. Their rational justification is a precondition for rational juristic discourse. (shrink)