...while Windmark continues his deeply weird method of walking around -- it's a cross between parade-ground military posture and Molly Shannon's woman who doesn't move her arms on Seinfeld -- as a human underling tells him they haven't been able to locate Nina's phone GPS signal. Oh, they're at the facility where the dude Hastings works -- he was shown in the previouslies, for good measure -- and are setting up to interrogate everyone to see if they can find any of Nina's co-traitors. Windmark starts with a guy who looks so nervous that he might expel everything he's ever eaten during this interrogation, but he tells Windmark that he doesn't know anything, and Windmark, after letting him twist for a while, says he believes him. (Forgive me if this has been established in the past, I'm guessing it causes some actual physical distress to be interrogated by Windmark -- the Blonde Loyalist looked like she was indisposed too -- because otherwise, as intimidating as he may be, these people have the worst poker faces ever.)
Back at the lab, Peter puts The Teacher Lite on Michael's head and Olivia assures him it won't hurt. I'm glad she knows enough about Observer physiology to underwrite that statement. Walter announces that Michael's cortical activity is "off the charts," because they have lots of charts (a binder full of them?) of Observer cortical activity and Nina adds that the neural link is good, so they're ready. Olivia tells Michael that if he wants to stop at any point, he should squeeze her hand and I guess since he's not talking that makes sense as a safe word. Anyway, when Olivia asks him a question, Walter can see that Michael's brain is responding to the question, but Nina is unable to get a translation, as Michael is processing information in a way different from the other Observers, like WHAT A SURPRISE. Walter concludes that something has fundamentally changed in Michael's brain that has made it impossible for them to communicate in the way they did before, but Nina comes up with the idea to get Michael to try to read their minds; that way, he'll know what they want on an empathic level and will be able to respond. It sounds like horseshit to me, but Walter proclaims it "brilliant" and I'm sure it can be both. Besides, it's not exactly the episode in which to talk back to Nina. Nina says in order for this to work, she'll have to reconfigure her software and also, they'll have to break into the warehouse at the MoS to get another Teacher Lite and a neural adapter for the person who's going to link with Michael. She goes on that she's got a man in Archives who will hook them up and Walter's brain isn't so mushy that he can't fish out the name "Hastings."