She's seen something that's caught her eye, though: a poster with a human hand playing chess against a robot hand. The poster's titled "Kramnik vs. Deep Fritz". Andy says, "Most people cite the '97 Kasparov/Deep Blue as the watershed man vs. machine match" -- yep, that's what most people do, all right -- "but Fritz would have wiped the floor with Deep Blue." Sarah looks unnerved by the robot arm on the poster. "What is it you do, Andy." He looks at her, and, given that she hasn't already left the place after he regales her with tales of social-misfit college years and man-vs.-machine chess matches, decides to go for it. He takes a key from the string around his neck -- my god, he wears a key on a string around his neck -- and opens up his closet.

The inside is crammed with computer equipment whirring away. "Meet the Turk," he says. He says the original Turk was an automaton unveiled in 1770; it was a chess-playing robot. A crucial piece of information he neglects to add: it was a hoax. Sarah, who should try harder to look like she's not about to throw up, asks if that's what Andy's Turk does: play chess. Andy brags that his Turk plays chess at a level that could beat any human that has lived or ever will live. Well, that sounds like fun. This information does not, surprisingly, prompt Sarah to rip Andy's clothes off. Even if she had been about to, she spots someone lurking outside Andy's window and forgets all about Turk. She goes to the door to look, and doesn't see anyone. We, however, get a glimpse of a bar-code-tattooed arm. Same person from last episode? She goes back inside, where Andy's already calling the police, either because he's a big wuss or because there's been a rash of break-ins in the area. Either way, Sarah's already out the door.

Back at the Connor compound, Sarah gets frustrated as John asks her technical questions about the Turk that she can't answer, like about horsepower, network access. "It plays chess," says Sarah. Well, you're the one freaked out by it, Sarah. "So did Einstein," says John, like that's some kind of argument-winning coup de grace. "Have you ever heard of the singularity?" asks John. He says it's the point in time when machines get so smart that they can make smarter versions of themselves without human help. Yeah, I'm pretty sure your mom's familiar with that concept, John. "That's pretty much the time we can kiss our asses goodbye. Unless we stop it." Language! That's your mother. "Like you said you would," he reminds her. Moooooom! You promised to change the future so humanity doesn't get wiped oooooouuuuut! You promised!