> If life originated on some other planet and made it to Earth, why did only the DNA-based lifeform(s) make it here? The problem is that we can't see through s

> If life originated on some other planet and made it to Earth, why did only the DNA-based lifeform(s) make it here? The problem is that we can't see through survivor bias. Maybe life has lots of possible configurations and only DNA-based life was highly successful on Earth. It's also possible that non-DNA-based life exists, we just haven't noticed it because it is too small, too slow, or too something-else that we missed it.