Definition of "simplistically"

Natural questions to ask are: 'What counts as data? How do you collect data?' There are two different types of data which linguists typically work with in formulating grammars. The first is a recorded sample of speech or text (such a sample is known technically as a corpus of utterances); we assume (perhaps simplistically) that in general people speak and write well-formed sentences. […]

1988, Andrew Radford, Transformational Grammar, Cambridge: University Press, page 24