On the deck, Sayid is carefully examining everything around him. In particular, he's watching Keamy standing on...some other deck, yelling at Frank. Look, I might as well admit it -- I know nothing about boats. I just assume everything is called the poop deck unless someone tells me otherwise. Frank walks toward Sayid while Keamy goes up a ladder to an even higher poop deck. Sayid is convinced that Frank's friends know what's up with Desmond, but Frank tells him that they haven't clued him in to any knowledge they possess. Sayid also wants to know why it is that the helicopter took off at dusk and landed on the boat in the middle of the day. Hey, you fly with Nick Nolte, there are bound to be some blackouts. Frank tells Sayid that he doesn't really know what's going on, but that he's genuinely trying to help. Sayid tells him that if he really wants to help, he'll let Sayid use the phone to call the island. Frank agrees to swap the phone for the gun that Sayid's packing. They make the swap, and Frank tells Sayid not to try to call anyone else, since the phones can only call each other.
On the island, Jack's phone rings. It's a wrong number. Or it's Sayid. There's a little mutual exposition -- Jack asks where the hell Sayid has been, Sayid tells Jack that Desmond went loco. Jack puts Sayid on speaker, thereby enabling Juliet, Daniel, and Charlotte to hear every word of the conversation. Sayid tells them what we already know, and Daniel looks very worried. Jack asks, "Side effects?" Daniel asks whether Desmond has recently been exposed to any radiation or electromagnetic fields. Just a little bit. Since neither of them really know what happened in the hatch (because nobody on this island ever shares the tiniest bit of information), they just stare at him stupidly. Daniel tells them that for some mysterious reason, some people going to or from the island can get a little confused. Juliet asks if it's amnesia. As we know, it is not.
In the sick bay, Desmond is trying to talk to the guy on the bed. His eyes are open, but he's just staring straight ahead and not reacting to Desmond in the slightest. I have to ask, is this what's happening to Desmond when his brain goes flitting off to the past? Because that would make it pretty hard for other people not to notice one of these little episodes. Bed guy blinks, and tells Desmond that he was just on a Ferris wheel. Wheeeee! The light in the room is turned on, and a sour-faced bald man in a lab jacket enters the room. Bed guy tells the medic (whose name is Ray) that he's not crazy because the same thing is happening to someone else. Ray prepares a hypodermic and sedates bed guy. After bed guy passes out, Ray asks Desmond how he's feeling. One a scale of one to ten, I would say "freaked out." He screams that he's not going to let Ray sedate him, and Ray calmly puts down the empty syringe. Ray pulls out a little medical flashlight and tells Desmond that he only wants to check his eyes. Desmond asks why; Ray tells him, "So I can help you." Desmond calms down and lets Ray approach him. Ray starts to flash the light in his eyes, and asks him to talk about the last thing he remembers.