Hockett's design features
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Hockett's design features are a set of features that characterize human language and set it apart from animal communication. They were defined by the linguist Charles F. Hockett in the 1960s. He calle
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Quipu
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Quipu, also spelled khipu, are record-keeping devices fashioned from knotted cords. They were historically used by various cultures in the central Andes of South America, most prominently by the Inca
Hockett's design features
…Sound waves quickly disappear once a speaker stops speaking. This is also true of signs. In contrast, other forms of communication such as writing and Inka khipus (knot-tying) are more permanent. Interchangeability refers to the idea that humans can give and receive identical linguistic signals; humans are not…
An Inca quipu, from the Larco Museum in Lima, Peru.
Representation of a quipu (1890)
Quipu in the Cleveland Museum of Art in Cleveland, Ohio.