Factual error: Aron Eisenberg's name is misspelled on-screen as Aron Eisenerg.

Revealing: In episode 'The Passenger', when the Koblian officer opens Vantika's eyes to run a retinal scan, his pupils dilate, despite the fact that he is dead.

Deliberate "mistake": The dying Vantika hides his consciousness away in a portion of Dr. Bashir's mind. At one point, "Bashir" (heavily cloaked in clothing and shadows) comes up behind Quark and makes sure his demands are clear. At this point, it should still be unclear just how Vantika is still "alive", and whose body he is using. However, when he shoves Quark away, for a fraction of a second, Bashir's face can be seen under his hood. They were true to plot in using the right actor (though he shouldn't have been seen), it is possible some might have spied the secret earlier than the show meant to reveal it.

Continuity: At the end of the episode, Odo has sent everyone affected by the telepathic matrix to a cargo bay. Sisko and O'Brien remove their com badges, throwing them aside before heading to the bay. After everyone is cured, Sisko straightens back up and, in the closeup, you can see that he has a badge on. In the next closeup, its gone again.

Continuity: When Kira is explaining to Jadzia in Quark's that she wants to get rid of Sisko, she is wearing her Bajoran earring in her right ear. When she picks Quark up by his collar a couple of shots later, the earring is gone.

Factual error: The originally-aired version spelled the word "Acquisition" without the "c" and it appeared in the credits as "Aquisition." This goof has been corrected in the DVD versions.

Factual error: During the fight in Ops, the laws of physics takes a slight dive. While Worf is fighting the Klingons, he hits them with his Bat'leth or his mek'leth, and a second later they react to the hit.

Other: Shortly after Quark, Rom and Nog arrive on Earth in the 20th century, just after they are observed through the one-way glass by the Army officers, the Captain in the hat who enters the room with the man in the suit to interrogate the Ferengi is wearing his rank bars on his shirt collar horizontally, parallel to his collar. The two bars of an Army Captain's rank should be worn vertically.

Continuity: It's surprising that Joseph Sisko is still alive at this point in the series. In previous episodes, Ben seemed to imply his father was deceased. In "Emissary" and "Paradise", he said his father WAS a gourmet chef (which is still his current occupation in this episode). And in a conversation with Odo in "The Alternate", Ben told him of how his father had a severe illness that made him very weak and he was unable to help him in the end.

Continuity: During Worf's questioning, Worf switched from being a Lt. Commander (2.5) pips and a commander (3) pips several times.

Continuity: In the scene where Dax is being questioned by the Klingon lawyer, Captain Sisko is shown having only 3 pips, or the rank of commander.

Factual error: When Captain Sisko introduced the head of JAG to Bashir's parents, he pronounced "Rear Admiral Bennett" but Bennett was wearing the rank of Admiral (2 X 4 pips enclosed) instead of Rear Admiral (2 X 2 pips enclosed).

Continuity: When Arissa is first interviewed in Odo's office, she displays a 'data port' that is embedded below and behind her left ear in her upper neck. Her hair is styled to make it visible, and the port seems to be there for the entire scene, tho almost completely obscured at times. The second time she's in Odo's office, her hair style is the same, making it very obvious the port has now vanished, and it's gone the entire scene. For the third visit to Odo's office, the port appears and disappears at random. Apparently this scene was comprised of shots from the two separate shoots that made up the first two office scenes.

Revealing: When Odo and Arissa are talking in Odo's quarters, you can see where the star field ends and where the sound stage floor begins.

Visible crew/equipment: Just after Leeta and Rom makeup and decide to proceed with their wedding plans, the camera pans up to the Chief and Julian. You can briefly see green tape on the floor indicating where the Chief is supposed to stand.

Revealing: During the fleet battle Sisko says, "Evasive maneuvers, Pattern Omega. We're going through." After he says this, there is a flash of light on the bridge. During the flash, if you look closely, there is a ship diagram in the background behind Sisko on the left side of the screen. This is a diagram of an Excelsior-class ship, and the Defiant is NOT an Excelsior-class starship.

Continuity: Just before Ezri's first appearance (at Sisko's on Earth), notice the strap for the bag slung across Benjamin's father's shoulder. First it is twisted on his shoulder, then flat, then twisted, then flat again.

Continuity: When every senior staff officer is in the conference room, watch Dax's rank pips. They change places from a shot to another, going (mentioning from left to right on her collar) from black-gold to gold-black and coming back to black-gold.

Other: Just another one of Trek's boo-boos regarding holographic items leaving the holosuite (within Star Trek shows it is specifically stated that matter created inside the holodeck can not exist outside the holodeck, eg. ST:TNG "Ship in a Bottle"). This time, Nog enters the suite in a Ferengi-type jumpsuit. He moves into Vic's hotel suite and eventually dons a tux. But later, when Vic terminates the program to throw Nog out, Nog emerges from the holosuite still in the tux, which doesn't really exist.

Continuity: As the episode begins, Ilario was referred to as an Ensign by Bashir and Dax. When he was found murdered the next morning, Odo referred to him as Lieutenant Ilario.