The strand of meaning-focused output involves incidental learning through speaking and writing. Learners’ focus is on communicating messages. The justification for a meaning-focused output strand has a theoretical basis in the work of Swain (1985) and experimental support from research such as that of Joe (1998) and Newton (1995), which show that learning can occur, and is enriched, when learners produce language. Swain argues that having to produce messages makes the learners look at language in a new way. Language features, particularly grammatical elements, that were given little attention in listening and reading, gain a greater importance in production when learners are pushed to make choices in how to say something.