Which can confirm any number of things. If these are a record of a time that's passed, we know people woke before us, but have left in some way. [Or been disappeared. One of the visions alludes to that, but it's hard to say.] But then there is the other option: they may be a vision of a future. [Lexa doesn't sound convinced about this, but it's difficult to say. The people aren't them, but what if more pods were found? Or rather, are found?]

They change, which is why I'm reluctant to call them a record of anything.