From fire and the wheel down to the light bulb and the iPad, we mark the march of history by the steady beat of transformative innovations.

FORBES: By James L. McQuivey

Each generation gives way to the next, so that over time fire became electricity and the wheel morphed into a computer.

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Nor will displays of facility with weapons, tools, or chocolates, the last in short supply during the Plesistocene Era when men were apparently inventing three men walk into a bar instead of tinkering with that wheel idea or inventing the camp fire.

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