4 ms·
"Available evidence" : that's because we still don't know how to look for it, or what to look for, and the reasons for that are complexity and time.
by oblib 9y ago
"Available evidence" : that's because we still don't know how to look for it, or what to look for, and the reasons for that are complexity and time.
- dredmorbius 9y agoWrong. "Available evidence", because there are no extant lifeforms which diverge from the known set of amino acids, no prokaryotic life which doesn't have (or at least didn't once have) mitochondria, utilisation of the Krebs Cycle, and numerous other elements. Again, other variants might have emerged. But they haven't survived, suggesting the extant line out-competed (or possibly out-lucked) any challengers