When ships first came to the new world, I was told a story where the local indians couldn't see the ships on the horizon. They didn't have the context or worldview to actually "see" the ships.
The indians were on their own in the "new world". While Europe had risen and burned and conquered and been conquered, tribes in the Americas grew and developed with no contact.
What if we (the people on this earth) are like the Indians? Developing in a vacuum - alone in our immediate neighborhood. Unable to see the "discoverers" from another land because our worldview does not permit the recognition of a different pinta, nina and santa maria?
What shock it would be when the ships docked in the harbor?