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How a thing appeared and developed in our world, without which it is difficult to imagine modern technology. Imagining the level of bearing development in the modern world, it is hard to realise that once it all started with a hole in a stone. Or was there another way...? ______________________________________________________ How a thing appeared and developed in our world, without which it is difficult to imagine modern technology. Imagining the level of bearing development in the modern world, it is hard to realise that once it all started with a hole in a stone. Or was there another way...?