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A comment on What Should We Do If Extraterrestrials Show Up?. Parent comment

Re:What Should We Do If Extraterrestrials Show Up? by platz on Sunday April 18, 2021 @09:31PM (#26858340)
We don't know that the universe is infinite.

Also, even if space was infinite, that doesn't mean that low-entropy energy/matter (to extract energy/work from) is also infinite.

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Re:What Should We Do If Extraterrestrials Show Up? by orwin on Sunday April 18, 2021 @09:49PM (#26858430)
> low-entropy energy/matter (to extract energy/work from)

A word i like for that is exergy. Energy you can extract.

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