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Comment on A lightning bolt would be worth only about a nickel (2015)parent

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While it's true that the power of a human is not much (certainly not enough to power a house), but we have a lot of energy. Most of us carries at least 1 kg (~2 lbs) fat, which contains ~37 MJ of energy. For comparison, a stick of dynamite has ~1 MJ of energy.

https://en.wikipedia.org/wiki/Fat#Biological_importance

https://en.wikipedia.org/wiki/Dynamite#Form

Why stop there? The matter itself is energy, so combine a human with an anti-human....

Sweet oblivion looks just like me

Most of us carries at least 1 kg (~2 lbs) fat

It's a lot more than that. Even a fit (healthy, but not necessarily peak athletic shape) adult man will have about 15% body fat, 20% for a woman.

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