The tools are known as the Oldowan tool kit, which previously only spanned from 1.7 million years to 2.9 million years ago. Lead archaeologist Tom Plummer suggested that the tools found paved the way for everything that followed.
In terms of technology, I think the Oldowan technology is the most important technological innovation that ever happened in human history. It allowed hominins to access a whole array of foods that they never had access to before, fueling body and brain size increases.
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