stimulated what we recognize as the cultural revolution of the Upper Paleolithic( more evolved man). The basic advantage of a small set of phonemic units lie in their cognitive indexical function, there facilitation of storage and rapid retrieval of information from an increasingly larger mental lexicon. In other words, the bigger the brain and the more compact the language, the easier it was for the individual to retrieve the language. (www.massey.ac.nz/).
             If language originated in manual gestures, why do modern-day human beings speak? Although the early hominids would have been much better preadapted to manual communication, and silent signs may have been preferred on the savanna, there were surely eventual advantages to switching to vocalization. For one thing, speech can be carried on in the dark, or when obstacles prevent communicating parties from viewing one another, or over re
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