Argumentação e discurso político: o papel estratégico da pressuposição como introdutora de informação partilhada.

Abstract

Designed, initially, as a condition to be satisfied for the normal use of a statement, the current focus on the presupposition, in the argumentative semantics, emphasize its role as a discursive strategy. To convey information implicitly assumed, the speaker imposes a discursive horizon to his interlocutor, preventing some content that are subject to challenge by the interlocutor. In this work, we will focuse on the phenomenon of semanticpragmatic presupposition, investigating their presence in political disco.urse. Particularly, we will outline an analysis of a series of excerpts ífom two speeches by President Lula. We will seek evidence, from the perspective of ' Ducrot (1977, 1987), that the use of content in the form of implicit assumptions is very argumentative, even forming a discursive strategy of the speaker in that it requires the to interlocutor acceptance of a set of information placed as (supposedly) being shared by both parties.