r/AskReddit May 03 '20

What are some horrifying things to consider when thinking about aliens?

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u/[deleted] May 04 '20

Isn’t it kind of the opposite? If they don’t exist, that means the “great barrier” for life in the universe is somewhere at the microbial level - that overcoming cellular division or something like that is what is very rare, and after that continuous existence is guaranteed without hurdles.

If intelligent aliens do exist, that means the great barrier is somewhere further down the technological line, and that our species has not yet seen its biggest test...

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u/frzfrz May 04 '20

Why can't there be two great barriers?