Humans' success stems from building on past knowledge through various communication methods, offering more space to experiment and innovate different tasks, enhancing efficiency and productivity.
Chimps and bonobos lack cumulative culture like humans, without building on past knowledge. New analysis suggests humans developed this ability just 600,000 years ago.
Researchers studied stone toolmaking to trace the origin of cumulative culture, finding styles remained constant for hundreds of thousands of years, allowing the understanding of manufacturing techniques.
Stone tools were crucial for studying the evolution of cumulative culture, as they were the most well-preserved artifacts throughout human history.
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