[Southack]

Do we have any evidence in hand that the first living cellular organism formed without DNA? - Southack

"The burden of proof is on you to show that it formed with DNA." - Physicist

All scientific evidence shows that all cellular organisms have DNA. Your claim for the first life forming without DNA is outside that body of evidence.

Thus, the burden of proof is on you, not me.

[Physicist]

Your claim for the first life forming without DNA

I made no such claim. I merely demonstrated that the possibility cannot be discounted, and that's sufficient to destroy the author's argument.

is outside that body of evidence.

No more so than the author's claim that the first cell had DNA. Today's cells are not the first cells; I reject that your "body of evidence" is entirely relevant.