Nitpick: It is said that the EPS conduits are only wide enough for a child. Yet as Hoshi moves through them she has plenty of room.
Goof: When Archer returns to the 22nd Century aboard the Suliban Helix, he grabs Silik by his jumpsuit. For a brief moment, John Fleck's costume is pulled far enough to see where his makeup ends and his real shoulder is visible.
Archer: When I was in my early 20s on a trip to East Africa, I saw a gazelle giving birth. It was truly amazing. Within minutes, the baby was standing up... standing up on its own. A few more minutes, and it was walking. And before I knew it, it was running alongside its mother, moving away with the herd. Humans aren't like that, Ambassador. We may come from the same planet as those gazelles, but we're pretty much helpless when we're born. It takes us months before we're able to crawl. Almost a full year before we can walk. Our deep space mission isn't much different. We're going to stumble, make mistakes. I'm sure more than a few before we find our footing. But we're going to learn from those mistakes. That's what being Human is all about. I'm sorry you can't see that.
T'Pol: I still don't believe in time travel.
Archer: The hell you don't.
Hoshi: Whatever you're about to say, I don't want to hear it. Just get me a shirt.
T'Pol: The Vulcan Science Director has determined that time travel is... unfair.
T'Pol: You're on the ceiling.
(Archer visits T'Pol at her quarters late in the evening)
Archer: I can't be certain but Crewman Fuller might have seen me coming in here.
T'Pol: She tends to be discreet.
When this episode aired in its first rerun on October 23, 2002, it was an "extended version" with over a minute of extra footage.
Daniels: You're thinking of time travel like we're in some H.G. Wells novel. We're not.
H.G. Wells was a 19th century science fiction writer. Among his works are The Time Machine, The War of the Worlds, The Invisible Man, The First Men in the Moon and The Island of Doctor Moreau.