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Similitude (episode)

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ENT, Episode 3x10
Production number: 062
First aired: 19 November 2003
61st of 97 produced in ENT
61st of 97 released in ENT
  {{{nNthReleasedInSeries_Remastered}}}th of 97 released in ENT Remastered  
690th of 728 released in all
Charles Tucker 17
Written By
Manny Coto

Directed By
LeVar Burton
Unknown (2153)
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During an engine performance test, Trip Tucker is critically injured and left comatose in sickbay. Phlox suggests that Tucker's only hope for survival is the creation of a "mimetic symbiont" – in other words, a clone. But what happens when a being destined to die wants a life of his own?


At a funeral ceremony, Captain Jonathan Archer is eulogizing a dead crewman who appears to be Charles Tucker III.

In a flashback to events that began two weeks earlier, Tucker wants to do some tests to see about compressing the antimatter stream in the warp core in order to get the engine running more smoothly to achieve greater speed. Unfortunately, only seconds after the experiments have begun, a primary injector flare forces Tucker to do a manual shutdown. While on the top of the warp core, he is injured by a nearby explosion and falls.

In sickbay, Phlox informs Captain Archer that Tucker has slipped into a coma due to extensive neural damage. He proposes to use a Lyssarrian desert larvae to make a clone of Commander Tucker and harvest neural tissues from it. Because of highly sensitive ethical implications, Archer does not make a decision right away.

T'Pol informs Archer that particles from the field they are inside (possibly the cause of the initial injector flare), are building on the ship's hull. The highly magnetic properties of the particles could become a problem if they are not able to clear the field in time. Archer agrees to allow the cloning procedure, sacrificing the ethical implications for the sake of the mission's objective.

The clone grows from an infant to a child and eventually begins to ask questions about its existence. The captain tells him the truth. As the clone, named Sim, ages, the repairs to the warp drive go slowly. Because the particles building on the hull have a dampening field effect, every system on the ship will fail before the repairs are complete. When Sim becomes an adult, he helps with the repairs. He comes up with a solution to the particles problem. It is around this time that he confesses the feelings for T'Pol he has inside him, wondering if they're his or Trip's.

Later, Phlox informs the captain that according to his predictions, Sim won't survive the transplant. What would only seem a couple of days for everyone else would seem half a lifetime for Sim. The doctor tells Archer about an enzyme he discovered about that could slow down the aging process, but after hearing an extensive report from T'Pol, Archer says that the odds are too thin and that he is not willing to jeopardize the mission.

Meanwhile, Sim plans and begins an escape, but at the last minute he aborts it. When the captain meets him in the launch bay, Sim says that what stopped him was the thought of his sister, insisting on the fact that she was his sister as well as Trip's. Just before the surgery, T'Pol comes to Sim's quarters to say her goodbyes, giving him a kiss, something she had never done with Tucker. Sim returned the gesture, showing that he meant something to her, more than just being a clone to save Trip's life.

At the funeral ceremony, the dead crewman seen earlier is revealed to be Sim. The crew, including a recovered Trip, pay their last respects as Sim is placed in a torpedo tube and fired out into space.

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Memorable quotes

"The most difficult test facing any captain, any crew, is the loss of a shipmate. We've come here to honor one of our own. In the time we knew him, he showed us just how much one life can truly matter. We will never forget what he did for us, and for the ship he loved so much. We will go forward with renewed determination to complete this mission, so that his sacrifice won't just have been for the people on this ship, but for all the citizens of Earth."

- Captain Archer's eulogy for a lost crewman, apparently Trip Tucker

"Regarding the Lyssarrian procedure Doctor Phlox proposed, may I ask if you've reached a decision?"
"I approved it."
"Are you aware that the Lyssarrian Prime Conclave has banned the creation of simbiots?"
"We don't answer to the Lyssarrian Prime Conclave."
"Simbiots are living, conscious entities. We'll be growing a sentient being for the sole purpose of harvesting tissue."
"I'm aware of the ethical implications. If we weren't in the Expanse, maybe my decision would be different. But... we've got to complete this mission. Earth needs Enterprise. Enterprise needs Trip. It's as simple as that."

- T'Pol and Captain Archer, discussing the controversial procedure Phlox has proposed in order to revive Tucker

"Can he do any tricks?"
"I haven't taught him any. Mostly what he does is eat, sleep, and, uh, not fetch."

- Young Sim and Archer, discussing Porthos

"I'm not talking about an adolescent crush. That was... well, that was two days ago."

- Sim, to T'Pol

"I have his memories. I have his feelings. I have his body. How am I not Trip?"

- Sim, to Archer

"I must complete this mission! And to do that I need Trip! Trip! I'll take whatever steps necessary to save him."
"Even if it means killing me?"
"Even if it means killing you."

- Archer and Sim, arguing over his right to survive

"I was all ready to do it."
"What stopped you?"
"Where the hell was I going to go? We're nowhere near any habitable planet. Didn't really want to spend the rest of my life floating around in a shuttlepod, which doesn't even have any toilet facilities. Can you imagine a lousier way to spend your old age – cooped up in that thing, peeing in a bottle? Actually, I can imagine a worse fate."
"What would that be?"
"Being stuck in there with Malcolm!"

- Sim and Archer, with an obvious reference to Tucker's experience as documented in the season one episode, "Shuttlepod One"

"Do me a favor when this is over. If Commander Tucker decides to do any more modifications to the engines... tell him to watch his ass!"

- Sim, to Archer

"I'm sorry I doubted you, Doc."
"No need to apologize."
"Yes, there is. You see, I don't just remember Trip's childhood. I remember mine. You made a damned good father."
"You were a damned good son."

- Sim and Phlox

"You said to me once that commanding a starship was what you were meant to do. I guess this is what I was meant to do. Good luck, Captain."

- Sim's last words to Archer

"You owe me one!"

- Sim's last words, to the still comatose Tucker

Background information

  • This episode marks the first written contribution of the new Co-Executive Producer, Manny Coto.
  • Adam Taylor Gordon, who played a younger version of Tucker in "The Xindi", played the version of Sim at age 8 in this episode.
  • This is the only episode in Star Trek: Enterprise's third season that does not include any references to nor appearances by the Xindi, though "the Xindi weapon" is referenced.
  • The model Archer played with as a boy in "Broken Bow" reappears in this episode.
  • This is the first occurrence in the Star Trek universe, chronologically, to have a funeral on board the starship.
  • This is also the first chronological mention of a tricorder (in reference to Phlox's medical tricorder) and the only occurrence of that word in the series.
  • Pondering his final moments in a shuttlepod, Sim mentions sharing his agonies with Malcolm Reed which is a reference to Trip's memories from ENT: "Shuttlepod One" where he was trapped with Reed in a pod.
  • This episode won an Emmy Award for Velton Ray Bunch's music composition.
  • This episode establishes that NX type shuttle pods do not have any bathroom facilities.
  • Chronologically, this is the first time we witness a photonic torpedo casing being used as a coffin for the deceased in Starfleet funeral proceedings. The practice is repeated in Star Trek II: The Wrath of Khan.
  • This episode was chosen as the #3 fan favorite in an on-line poll conducted by UPN. It was re-broadcast on March 25, 2005 in that context. Note: The poll was conducted before the final six episodes of the series had aired.
  • The book Star Trek 101, by Terry J. Erdmann and Paula M. Block, lists this episode as one of the "Ten Essential Episodes" from Star Trek: Enterprise.
  • John Billingsley named it as one of the strongest episodes of the third season. [1]

Links and references

Main cast


Uncredited co-stars


A-3 injector port; A Night at the Opera; antimatter injector; Archer, Henry; architecture; Bedford; birthmark; cerebrum; Cochrane, Zefram; coma; clone; Delphic Expanse; Dennis; Denobulan; diagnostic; diaper; DNA; dollhouse; Earth; engineer; Enrique; epidermal layer; ethics; EV team; feces; ferric ion; field coil; funeral; fusion overburn; garden snake; genetic memory; genetic sequencing; glue; horse; injector flare; key lime pie; kilodyne; kilometer per hour; Lyssarrian; Lyssarrian desert larvae; Lyssarrian homeworld; Lyssarrian Prime Conclave; magnetism; Martian; Marx Brothers; Massaro; medical tricorder; mimetic simbiot; nucleonic particle; neuro-pressure; neural nodes; Orsic fern; phase cannon; plasma assembly; plasma rifle; playing cards; REM cycle; salve; Shuttlepod 1; Shuttlepod 2; Steven; system tap; targeting scanners; toilet facility; teething stage; Tucker, Charles II; Tucker, Elizabeth; Velandran Circle; Vulcan; The War of the Worlds; warp drive; Xindi weapon; Zefram Cochrane's statue

External link

Previous episode:
"North Star"
Star Trek: Enterprise
Season 3
Next episode:
"Carpenter Street"

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