Sphericalness is ‘likely to have been produced intentionally’ – but why it was done remains a mystery
Early ancestors of humans 1.4m years ago deliberately made stones into spheres, according to a study – though what the prehistoric people used the balls for remains a mystery.
Using 3D analysis to reconstruct the geometry of the stones, the researchers determined that their sphericalness was “likely to have been produced intentionally”.– exactly which human lineage they belonged to remains unknown – had “attempted to achieve the Platonic ideal of a sphere”, they said. This is important because while nature can make pebbles smoother, such as those in a river or stream, “they almost never approach a truly spherical shape”, the study said.
That in turn indicates that our ancient relatives had the cognitive capacity to plan and carry out such work.
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