Which theory about aliens is the most likely? Submitted by [deleted] t3_zqjwze on December 20, 2022 at 9:22 AM in space 192 comments 38
ridgecoyote t1_j0yubkh wrote on December 20, 2022 at 12:53 PM Reply to comment by TheTimeShrike in Which theory about aliens is the most likely? by [deleted] One theory is that former tech relied on biological advances rather than material advances. Permalink Parent 1
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