Originally Posted by ratbastid

That man can act one-eyed better than any other one-eyed actor I know of.

I'm in the "thank gods for ambiguity" camp. lurkette has decided she prefers it if they jumped back in time, rather than having been in current-humanity's distant past all along. It reads as a more literal "this has all happened before", for her. There's no evidence for that, but she's decided it's so.