re: #587 Iron Fist

But the notion that everything that uses DNA evolved from a common ancestor? No, I don’t buy it. That is a huge leap of faith

Why is the following statement a “huge leap of faith”?

A certain extremely complex, long-chain, self-reproducing molecule appears in species X. An extremely simliar moleculte appears in species Y. Therefore, it is likely that species X and species Y have common ancestor.