When is argumentation deductive?

This paper discusses and compares various answers to the question when argumentation is deductive. includes an answer questions defeasible whether a subclass of deductive or it distinct form argumentation. It concluded that as conceived by Philosophers like Pollock Rescher formalised in ASPIC+ framework systems Defeasible Logic Programming, are semantically different categories. For this reason, purely syntactic base logic approaches formal unsuitable for characterising distinction.