Scientists have long pointed to excavated stone tools as evidence that early humans passed down their culture. But new research is shaking up that understanding.
. The scientists suggest that the earliest techniques for making stone tools can be spontaneously reinvented, even without any form of cultural transmission.
Tennie and team quickly observed a common pattern: All of the participants attempted to cleave apart the rope fastening the door. They did this by crafting some sort of cutting edge from the provided materials, mostly falling within three techniques of toolmaking that would have looked pretty familiar to our ancestors millions of years ago.
“When we see artifacts, it's natural for us to simply assume that it must have come out of culture because humans are creatures that live and breathe in culture,” says John J. Shea, an anthropologist at Stony Brook University who was not involved in the new study. Shea says he's come across a lot of anecdotal evidence in his career to suggest that humans can simply make these tools, without any form of prior knowledge.
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