Afterwards, we're in the present again, in Boston, at Olivia's place, where the drink-holding Olivia -- I'm just going to assume she drinks all the time now after seeing Peter as Glimmer Man -- answers the door to Walter, who's holding some big cloth-wrapped object. She asks what he's doing there. Not unfriendly, but clearly she'd rather be getting her drink on alone. "You left me no choice. You wouldn't answer your telephone, return my messages. I tried to communicate," says Walter, and Olivia, sounding sleepy and drunk and freaked out, says she doesn't know how to begin to work this out. Walter invites himself in to explain and asks for a drink himself.
While she pours a whisky for Walter (and another one for her), he asks if she's told Broyles. She hasn't, but that doesn't mean she won't, she says. Walter sadly says he always knew he'd one day have to pay the price for his deception. Keep in mind he spent 17 years in a mental institution (not directly because of this, I know, but still), so I'm wondering what sort of punishment he thinks is still coming to him. Olivia points out they don't really know what the cost is yet, as she hands him his drink. Well, free alcohol, so it could be worse, hey, Walter?
He unwraps the object, which is, unsurprisingly, the multi-universe television that he says he invented after he and Bell learned they had doubles on the other side. Or it might have been after. He can't remember. "I was a different man then. I was going to change the world. But you see, after Peter became sick, none of that seemed to matter anymore."
He says the illness was genetic and savage. "There was simply no hope. At least, not on this side. But over there ... they're more technologically advanced." Don't tell her about the zeppelins. Walter's theory was that if the alternate Peter was sick, then wouldn't the alternate Walter be as equally motivated to find a cure? Which turns out to be true, which is fortunate, given that the whole point of the alternate universe seems to be the little differences.