Alt-Plivia's connection to Peter

I would think it would be easy for Walter and Peter to tell Olivia from Bolivia on Fringe. What gives? — Ted

MICKEY: Well, Bolivia's physical transformation is meticulous, and you'll see her come up with a very plausible explanation for her un-Olivia-like behavior. But Joshua Jackson points to a third factor. "I think there's something really cool about the idea that people from the same universe have some instinctual, animal level of connection to each other," he says. "The reason Peter responds to the other Olivia is because that would be his Olivia."
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