My working hypothesis is that the galaxy (if not at least the solar system) is teeming with rocks containing Protozoa that are ready to colonise any planet with the right conditions (in a matter of thousands of years after the conditions are right) the moment they are ready. Perfectly explains everything we see and honestly would not be surprising at all.
We need to start developing meaningful working hypotheses and make judgement calls instead of waiting till we have definitive proof. This was similar to how basically no one was surprised that every star out there has planets around it yet we were writing sci-fi under that assumptions for basically a century before definitive proof.
We need to start developing meaningful working hypotheses and make judgement calls instead of waiting till we have definitive proof. This was similar to how basically no one was surprised that every star out there has planets around it yet we were writing sci-fi under that assumptions for basically a century before definitive proof.