"I believe starting all over again without making adjustments is the very definition of insanity," Peggy feels compelled to wearily point out. "If anything, I should be treating it differently." She's had time to think about it, even if it's been limited so far. "I've been thinking of starting to look more close to home for answers. Perhaps there's something we've been missing. Perhaps it's simply that we haven't dug enough." Literally, she means, in this case.

Who knows if this is the first and only settlement? What if they've built over it and it's simply archaeology that's been missing from this to answer their questions.