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Creating a working soda machine with Lego bricks

Hello guys! Today I want to show you how to make a lego (how to build a lego) vending machine that will give you a Soda or other candies, Coca Cola, Pepsi, Sprite with real safe. Former CIA officer ...
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Jevons Paradox: Rise of the Machines May Create More Work for Physicians

It is a confusion of ideas to suppose that the economical use of fuel is equivalent to diminished consumption. The very contrary is the truth. 1 Stanley Jevons (1865) The surprising thing is the ...