Based on a corpus of 112,000 words of spoken discourse, this paper exa
mines the use in natural conversation of 'factive' predicates (Kiparsk
y and Kiparsky, 1968). It is suggested that factive predicates operate
as indexical symbols (Jakobson. 1971) to encode both a semantic, refe
rential meaning or proposition, as well as to index pragmatically an e
pistemic stance on the part of the speaker. The role of factive predic
ates in the constitution of the indexical ground of discourse (Bauman
and Briggs, 1990) is also considered. Following Chafe (1994) another,
more dynamic model of speaker is presented here, which takes into cons
ideration the multiple footings (Goffman, 1981), or perspectives, whic
h speakers adopt in discourse, regardless of speaker's logical knowled
ge state. This model not only offers an explanation for the use of fac
tive constructions in irrealis discourse contexts (where previous disc
ussions suggested that factive predicates 'lose their factivity'), but
also explains why factive constructions index an inherent duality of
stance.