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My hobby: extrapolating https://www.xkcd.com/605/

Galaxy-scale energy consumption in 2400 years seems improbable due to the speed of light limit (Milky Way is 150,000 light-years in diameter).



Impossibility was the whole point in this blog post.

Exponential, like say 1% yearly growth, must eventually end.


"If something cannot go on forever, it will stop".

Stein's Law.




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