Edited by Susana Rodríguez Rosique and Jordi M. Antolí Martínez
[IVITRA Research in Linguistics and Literature 34] 2023
► pp. 1–18
Every language has a variety of ways of expressing how one knows what one is talking about. In quite a few of the world’s languages, one has to always specify the information source through grammatical means. Evidential terms may combine reference to the information sources of the speaker and of the addressee and to information shared by everyone. A special term for ‘common knowledge’ is a feature of a few large systems of evidentials. Sharing information source and common knowledge may constitute part of the meaning of an existing evidential within a large system. Shared context allows speakers and the audience to distinguish the exact reference of each evidential term. If a language becomes obsolescent, the meanings of the evidential terms change. This is illustrated with a case study from Tariana, an endangered Arawak language from north-west Amazonia, Brazil.