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flexonaho t1_iydzsvz wrote

It does now because we haven't made everything 100% efficient. Everything starts as potential energy and the more of that potential energy you can convert into the energy you want, with less wasted on other forms of unwanted energy, the more efficient your conversion is.

It's like the ways cars are more efficient now. No less energy is imputed but the way it's user has been made more efficient

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