Additional consequences of disclosure

I was thinking the other day and thought I’d post it. Everyone talking about the consequences concerning disclosure (possible free energy, technology, etc.) but what about things such as history? Its one thing to learn aliens exist, or even know possible how we were created. But jobs such as history teacher, or even archeology would possibly have to be rewritten. We read our history books, and come up with what we think the Acropolis in Athens looked like in 500bc, but the Aliens may have actual video or images. That alone would cause all we think we know about history to be turned upside down. Can anyone think about anything else that would possibly change besides the usual stuff?