Until now, it had been believed that hominins like Homo sapiens ( modern humans ) and Neanderthals were history's only toolmakers. But the stunning results of this new study, which has just been published in Science Advances , call into question the identification of at least some ancient stone tools as human cutting or scraping objects.
This wouldn't be the case for all of the tools identified , since many (if not most) ancient stone tools are found in archaeological contexts that show other indications of human settlement and activity. But isolated stone "tools" supposedly made by ancient toolmaking cultures may now require much more careful analysis than in the past, to be sure that they really are human artifacts.
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