The evidence points to floods at the end of the last ice age that dwarf anything in recorded history. These weren't just large floods, they were landscape-erasing events capable of wiping out entire chapters of human development. The question isn't whether such floods occurred, the geological record makes that clear. The question is what existed before that threshold, before that gateway was closed by catastrophic water. For archaeology to declare with certainty that nothing of significance preceded these events is to speak beyond what the evidence allows. We simply don't know what was lost, and the scale of these floods suggests the loss could have been profound.