Yes, prediction, it wasn't apparently identified when he made his prediction. Although that is abhorrently speculative. Speculative because they have known for well over a century of increasing anomalies fitting former predulivian civilization narratives. Civilization wiped out in ancient calamity, from the bible to Atlantis and almost every ancient culture spanning the planet, have all had stories of it.

Yet those that profit have insisted on something contrary. Today with far more exploration it is becoming impossible to refute. It has even been effectively proved with the Greenland crater. It had been debated prior to Casey. Where that evidence was less than today. Anomalies increasing into fact. What occurred. It has been constantly rejected for even more Dinosaur consumption, and evolutionary subhumanism. Regardless of it fitting into the modern paradigm or not, it is abundantly clear ancient calamity occurred, civilization was advanced enough to have been affected by it.