 All systems of informal logic are attempts to understand and assess arguments in the premise/conclusion sense. In view of this, the core value of A in the BLAST definition is shared by all informal logics, though there are many variations that occur when informal logicians expand this conception by adding other elements to it. This can be done by understanding an argument as a premise-conclusion complex which is directed at an audience, or backed by a warrant, or provided as an answer to an opponent who has an opposing point of view. When they expand the definition of argument in these ways, systems of informal logic make an audience, warrant, and/or dialectical context an essential element of a case of argument. 