Linguistic Evidentials and the Law of Hearsay
This chapter explores the relationship between how natural language expresses degrees of certainty in the truth of an assertion on the one hand, and how the law handles this issue on the other. This discussion focuses, in particular, on the hearsay doctrine and on the linguistic elements identified as “evidentials:” expressions that include information about how speakers came to know the assertions they make. The hearsay rule bars certain kinds of speech acts from serving as legal evidence, in particular, assertions that report what another person earlier said, and which are offered to express the truth about the events at issue in a case. The author links the law governing hearsay in terms of speech act theory, a connection also drawn by the philosopher John Langshaw Austin, who observed that statements offered to prove the fact of the speech act rather than the truth of the matter asserted are admissible.