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A comment on The growing body of evidence that digital distraction is damaging our minds. Parent comment
Solar concentrator (lens, mirror) can harvest large amount of energy.
Proper use of levers and gears can make you move tons with your fingers (although you need experience), see https://www.youtube.com/watch?v=E5pZ7uR6v8c and the likes
You don't need to reproduce horse plow with an oil based engine.
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Solar concentrator (lens, mirror) can harvest large amount of energy.
Proper use of levers and gears can make you move tons with your fingers (although you need experience), see https://www.youtube.com/watch?v=E5pZ7uR6v8c and the likes
You don't need to reproduce horse plow with an oil based engine.