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168 points julienchastang | 1 comments | | HN request time: 0.301s | source
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John7878781 ◴[] No.43711464[source]
This is unsettling. If we are not the only intelligent beings in the universe, it adds credence to the idea of a "great filter."

https://en.wikipedia.org/wiki/Great_Filter

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kulahan ◴[] No.43711514[source]
My greatest desire is to know why we don’t see any galaxy-sized colonies. A great filter would certainly be a fascinating response!
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1. vikramkr ◴[] No.43712563[source]
I mean, communication is insanely hard. If there's no way around the speed of light, life would still likely (slowly) expand across the stars, but it would be functionally impossible to continue to act as a unified civilization or colony across even a couple solar systems much less a whole galaxy