 Above and beyond their study of general methods of argument analysis, argumentation theorists investigate arguments in a variety of ways: by exploring particular aspects of arguing (e.g., onus, burden of proof, or the norms that govern arguments in specific contexts); by analyzing arguments from historical, social, political or feminist points of view; by studying particular kinds of argument (e.g., those expressed in works of art, or those that arise in specific legal contexts); and by investigating the assumptions, conditions (philosophical, epistemological, social, political, institutional, psychological, educational, etc.) which give rise to disagreement, arguing and argument in the first place. In many ways, such endeavors intersect with informal logic. 