In the Beginning: The origin of Lang Kanzi's acquisition of grammatical than that of children, skills was slower taking about three years(starting when he was five and a half years old). Most of Kanzi's sentences" are internal structure. fixed formulas with little if any Kanzi has not yet exhibited the linguistic knowledge of a human three-year-old whose complexity level des knowledge of sentence structure. Moreover, unlike se of a different word order from his caretakers, children rapidly adopt the correct word order of the surrounding language. As often happens in science, the search for the answers to one kind of ques- tion leads to answers to other questions. The linguistic experiments with pri mates have led to many advances in our understanding of primate cognitive a ity. Researchers have gone on to investigate other capacities of the chimp mind, such as causality; Savage-Rumbaugh and Greenfield are continuing to study the ability of chimpanzees to use symbols. These studies also point out how remark- able it is that human children, by the ages of three and four, without explicit teaching or overt reinforcement, create new and complex sentences never spoken