The point has also been made that ambiguity is a functional property of language, because it is more efficient from an information-theoretic point of view: cont

The point has also been made that ambiguity is a functional property of language, because it is more efficient from an information-theoretic point of view: context also provides information, but a purely unambiguous language would have to express that information anyway. Ambiguity also allows reusing words and sounds. (http://www.sciencedirect.com/science/article/pii/S0010027711002496 http://www.sciencedirect.com/science/article/pii/S0010027711...).