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DID ANCIENT SUMERIAN KIDS INVENT THE WHEEL?

On a beach in Goa I once observed tiny sand crabs forming perfectly spherical balls out of sand and depositing them around the entrance of their burrows. Observing Nature is not only fun, it inspires and it is said that the Chinese invented paper by copying what wasps did and that flying machines were invented, because humans observed birds and insects. But where did the first wheel-makers get their inspiration from? What could have “got the ball rolling”? Are there any animals or plants that roll or tumble? —>—>