Goodall telegraphed her boss, the fossil-hunter Louis Leakey (father of Richard), with the news. His response has since become the stuff of scientific legend: "Now we must redefine man, redefine tools, or accept chimpanzees as humans." Leakey was exaggerating but not by much. Certainly, there is little doubt about the importance of Goodall's discovery five decades ago. As the distinguished Harvard palaeontologist Stephen Jay Gould put it, this was "one of the great achievements of 20th-century scholarship".
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