The question being asked is not "sensationalist". It is a perfectly legitimate question of epistemology: can we know? If there ever was such a trans-ancient c

The question being asked is not "sensationalist". It is a perfectly legitimate question of epistemology: can we know? If there ever was such a trans-ancient civilization, would evidence still be identifiable? Or is deep time as, and perhaps even more, unknowable as deep (relativistic) space?