ANYWAY, Walter moans that Bell was his best friend, and wherever he is, he'll be "very disappointed." Struggling to not cry, he tells Astrid that they're low on butter, and she goes to fetch some.
Meanwhile, Broyles and Peter are looking at the blueprints for Walternate's doomsday machine, which Peter tells Broyles was missing several pieces: "Including one very important one. Me." Big deal. Who isn't a crucial component of a doomsday device? "You think this is accurate? That you somehow can power this device?" Peter says the device seems to need a "specific human interface," and tells him about the part that responded directly to him.
Broyles is worried about Walternate needing Peter to operate the weapon, but Peter's not worried about it, because Walternate's got agents on this side, so if Walternate wanted him back, they "would have made a play already," he says, even though he's only been back for a couple of days, and switching universes isn't exactly like nipping out to the corner store for a carton of milk.
And instead of helping with all this, Walter is bitching about the cacao beans Peter got, whining that Gene will never be able to digest them. See, he's trying to make Gene produce chocolate milk, which is -- actually, that's pretty damn cool, so he should just keep at that.
Broyles asks Walter if he has any idea why this machine would be configured for Peter, like shut UP, Broyles, he's working on something important! Walter simply says that he knows the machine is dangerous, which is why Broyles says they need to understand: "If it is indeed a threat..." he begins, and Walter finishes: "...then to ignore it would be irresponsible. I've heard that argument before. That's what you people told Oppenheimer when you discovered that the Nazis were working on a bomb," he says. Yeah, and then Oppenheimer made the ultimate bomb! So that worked out great, didn't it? Or am I missing Walter's point?
Anyway, Walter agitatedly says he needs to go back to the market, and he yells for "Aspirin" to accompany him. They stomp out, as Fauxlivia comes in, with Walter asking if she needs anything, and she's sort of surprised, probably because she's been led to believe that the humans over here are all selfish, calculating remorseless skin-eaters, and meanwhile Broyles asks Peter if Walter's OK, and Peter says, "Well, he's Walter. Define 'OK,'" and I believe this is the fiftieth time that Broyles has asked a member of the Fringe team if Walter's all right and they shrug and respond with, "As good as he gets," or "With Walter, how can you tell?" so maybe we could drop this bit already. And Fauxlivia is just in time to hear Broyles tell Peter that Walter needs to be focused, and Peter asking, "What if he's right? What if we shouldn't be working on this thing?" which doesn't appear to square with Fauxlivia's war-mongering image, and then Peter and Fauxlivia head on out of there.