Until we find life elsewhere, all we can do is speculate. No matter what happens, unless we find electromagnetic signs of advanced lifeforms, we'll be stuck be

Until we find life elsewhere, all we can do is speculate. No matter what happens, unless we find electromagnetic signs of advanced lifeforms, we'll be stuck being only able to speculate for a long time. I do think it's a fair inference that there can be life elsewhere, and even that there is life elsewhere. Also, the Fermi paradox is about advanced lifeforms. The universe may be teeming with primitive life forms. If we can't find any primitive life elsewhere in the Solar system, then we might not find out until we develop interstellar travel, and even then, "find out" would mean on time scales longer than a single lifespan. Pointing out that we can only speculate seems... given that this is obvious... unnecessary. Perhaps you meant that we should not speculate?