that "if" clause is the stumbling block.
IF it can be explained by natural means.
so far, abiogenesis hasn't been able to do that.
the current theory of evolution is not complete either.
there are some that say darwin needs a rewrite:
Mazur says she was punished for getting out in front of the story and banned from the symposium but realized the story was bigger than Altenberg (which covered events beginning 500 million years ago) and spoke to scientists who were not invited, including those investigating pre-biotic evolution.
She came to the conclusion that evolutionary science suffers because many in the scientific establishment refuse to acknowledge that the old science has served its purpose and there is disagreement about what the new evolution paradigm is. She thinks the dam is now breaking because the public (who funds science) has become a party to the discourse via the Internet and seeks answers to fundamental questions about evolution that scientists so far cant definitively answer.
www.amazon.com/The-Altenberg-16-Evolution-Industry/dp/1556439245