How could we test universal common descent?

Paul Nelson offers some thoughts to A Goy for Jesus (“We’re just a humble Christian channel that largely focuses on Catholic & Jewish-related apologetics from a classical Protestant perspective, but we also deal with things like UFOs or random stuff.”):

May 18, 2022: The Challenge of Testing Universal Common Descent

Also:

April 27, 2022: Can Universal Common Descent be Tested?

You may also wish to read: Novel RNA and peptide species thought to have sparked evolution of complex life Researcher: According to the new theory, a decisive element at the beginning was the presence of RNA molecules that could adorn themselves with amino acids and peptides and so join them into larger peptide structures. “RNA developed slowly into a constantly improving amino acid linking catalyst,” says Carell. (He talks about the emergence of “information-coding properties” as if that would just happen.)

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