That's how lots of science works. Especially science involving the past, or science very far away.
Even if we do create a "cell" (whatever that means), it will only give us a possible explanation of how it happened on Earth. It will shrink the possible probabilities of all other methods, such as Aliens engineering us, but we cannot reduce all probabilities to zero... without a time machine.
Unfortunately we live in a world where even 100% definite in-your-face proof will not convince a frighteningly large %age of humanity.
IMHO claiming everything is "still a guess" shows a lack of understanding of science. I'm not judging, because I can't tell what you do and don't know from just three sentences. But it kinda sounds like it.
Even if we do create a "cell" (whatever that means), it will only give us a possible explanation of how it happened on Earth. It will shrink the possible probabilities of all other methods, such as Aliens engineering us, but we cannot reduce all probabilities to zero... without a time machine.
Unfortunately we live in a world where even 100% definite in-your-face proof will not convince a frighteningly large %age of humanity.
IMHO claiming everything is "still a guess" shows a lack of understanding of science. I'm not judging, because I can't tell what you do and don't know from just three sentences. But it kinda sounds like it.