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Re:Why extraterrestrial life may not seem alien by aaronblohowiak on Monday August 02, 2021 @01:13PM (#28039517)
Weir’s latest book goes into this. (Ex: Audible hearing is based on the distribution of frequencies generated when solid bodies collide or rub.)

On the other hand, If life is that which can use an energy differential to create more order within it (an entropy pump) then sure there are likely forms of “life” out there that we’d have a harder time imagining (that perhaps operate at physical scales and timescales beyond us — thinking nebulae)

Re:Why extraterrestrial life may not seem alien by rendall on Monday August 02, 2021 @02:33PM (#28040791)
> Audible hearing is based on the distribution of frequencies generated when solid bodies collide or rub.

... in Earth-like conditions, and useful in Earth-like conditions. Vibration of denser or rarified gasses could require other solutions to exploit, if it's possible at all

> If life is that which can use an energy differential to create more order within it (an entropy pump)

Now that's the ticket! Under this definition, I suspect most life in the Universe is not carbon based, but far more exotic (to us)