At the door, she thanks Jeremy's sister. Jeremy's not there, which means his sister can start crying about how Jeremy barely held it together after his wife died. "Without Ben, I don't think he'll make it," she says starting to wail. "Oh, OK, now I'll try to find him," says Olivia. Or she just says she'll do everything she can.
Hey, speak of the devil! It's Ben, in some dark, dank room, sitting in a corner, head down, left foot tapping out a rhythm. It's not so bad: There's a Superman cartoon on a nearby television.
The woman from the other night comes in and asks how he's doing. Ben says he wants to go home and see his dad. She says she's got something even better. "I don't care! I wanna see my dad!" he yells. Ben! Indoor voice! She says, "Well, your mother will be very disappointed to hear that." After a moment, Ben quietly says his mother is dead. "Are you sure about that?" she asks.
Back at Harvard, Walter is annoyingly singing Christmas carols under his breath, while adjusting a little box with three green lights and a red light, and Peter has to snottily ask if it isn't a little early for the "Yuletide cheer" and Walter explains that he's trying to jar loose any details about the flashing lights, but it hasn't happened. And Peter snidely asks if he thought it would be more useful to play with Christmas lights, and you think by now Peter would have learned to lay off his dad. Fortunately Walter's enthusiasm is undimmed by Peter's rudeness, and he talks about being hired to design a series of flashing lights that would hypnotize their subject and make them extremely suggestible. "The U.S. government had you working on mind control?" says Peter, and Walter says it wasn't the U.S. government but an advertising agency, who wanted to use the flashing lights during commercials to induce viewers to buy their product. "Unfortunately, it merely caused nausea," says Walter, who helpfully explains that people don't tend to buy things when they're chundering all over the place. Peter shakes his head, smiling.
Then out of nowhere Walter loses his shit yelling for the remote, and he's regressed from calling Astrid approximate names like "Asteroid" or "Astro" and is just yelling, "Miss!" And Peter tells him to chill out, because he's got the remote. Walter starts his babbling about Jeremy's hypnagogic state due to the lights, and Peter reminds him he said the experiment was a failure. Walter's excuse is that he was focusing on the timing and intensity of the flashes, not the colors. Really? Color of the light seems like an obvious variable to manipulate to me, and I'm not even a mad genius. Anyway, now that someone else has FIGURED IT OUT FOR HIM, Walter is keen to demonstrate on Peter, who dutifully stands and stares at the lights while Walter flashes the three green and one red in sequence.