(miniflash)

Millennia ago, on the banks of a wide river, a young hunter named Aaron watched his companions drag a heavy stone load toward a village. The ropes were torn, and the logs that served as support slipped in the mud.

Aaron thought about it. He noticed some round stones near the water and began to roll them, noticing how easily they moved. Then he took one of them, cut a hole in the middle, and attached it to a wooden axle.

When his “wheel” rolled, he was amazed to see how the cargo on a simple cart easily reached the village.

The elders laughed at his idea at first, but soon the invention changed the life of the tribe. Aaron had no idea that his idea would open a new era for humanity!