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We're all just speculating given that were stuck at sample size = 1 until we develop near light speed travel. I get the convergent evolution point, but so far
by alangibson 4y ago
We're all just speculating given that were stuck at sample size = 1 until we develop near light speed travel.
I get the convergent evolution point, but so far the story is that 1) life arose very quickly 2) then proceeded to do very little for billions of years. If that's true, then it's bad news for the possibility of complex life being common.
- majkinetor 4y agoIt only means that complex life is less frequent then single cell life, not that it is uncommon.
- Qem 4y ago> 1) life arose very quickly 2) then proceeded to do very little for billions of years. This is understating the feats of unicelular life. Those tiny organisms essentially terraformed the whole planet in those billions of years, oxidizing nearly all the iron close to earth surface, burying most carbon and then pumping so much oxygen in the atmosphere that at a point it comprised 30% of Earth gaseous envelope by weight. I wouldn't call that very little. To come close we'll need at least to terraform Mars or Venus, to match the feats of our microbial forebears.
- chestervonwinch 4y agoI think the parent comment meant doing very little from an evolutionary perspective.