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Unless you happen to be sat naked on a warm beach somewhere, you're probably wearing clothes as you read this. Have you ever stopped to think about how we got to the very probably woven cotton clothing you're wearing right now ?

Archimedes said there are three basic machines, the lever, pulley, and screw. In the renaissance the wheel and axle, the wedge and the inclined plane were added to the list. But I think something else should be added, a discovery that changed humanity.

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