original_query: What were some influential ideas developed by Charles Francis Hockett in American structuralist linguistics?
query: What were some influential ideas developed by Charles Francis Hockett in American structuralist linguistics?
answer: Hockett's influential ideas include his development of the design-feature approach to comparative linguistics (distinguishing human language from animal communication), his work on distributionalism or taxonomic structuralism, and his criticisms of Chomskyan linguistics.