Right before the commercial break, Yarnek says Kirk has four hours until the Enterprise explodes. However, after the commercial break, Scotty makes a log entry saying they have two hours, and Kirk and the others are in the same position on the view screen as when Yarnek said four hours.
During the talk with Lincoln over the view screen, old footage is reused. Notice that in shots facing the view screen, Checkov is replaced by another crewman and Sulu is wearing a season one uniform.
About 25 minutes in, there is another reversed shot as the good guys discuss what to do, right before Colonel Green comes over. Notice that Shatner turns left to talk to Lincoln who is on his right and that the Starfleet insignia is on his right side, not left.
The close-up on Lincoln as Surak screams is taken from his speech about being a woodsman from a minute or so later.
The final battle has an odd glitch. Genghis Khan pops up and throws a rock from the bad guys' refuge. Then we see Green and Kahless charge at Kirk and Spock. Then Kirk and Spock step back into a clearing and Kora and Genghis hit them. A couple of seconds later Kahless comes charging in. How did Genghis get there from his refuge before the charging Kahless did?
Barry Atwater who played Surak has noticeable difficulty giving the Vulcan "Live long and prosper sign", and he still doesn't get it right: he holds his thumb against his index finger instead of separate.
During the fight with Colonel Green, Kirk's pants split up the back, but in subsequent shots they're fine.
Right after Yarnek introduces the opponents, there's a shot of Shatner's face with his part reversed - the director reversed shots to save footage by recycling.
When Spock gives the orbital distance in miles of the Enterprise to Lincoln, he says "Using your old-style measurements..." Spock has used "miles" in the past, such as in "The Immunity Syndrome", and Kirk and Sulu use miles too when they talk about changing orbit in "The Deadly Years."
Lincoln asks Kirk if they measure time in minutes and Kirk replies "We can convert it." In every previous episode they've always used minutes - their ship chronometers are still set to minutes, etc.
Why does Kirk try to hit Yarnek? Even if he doesn't know the alien is superhot, punching a rock creature doesn't seem like a bright idea.
The fact that Kirk is completely ignorant of Surak seems kind of odd - Surak is "the father of all that the Vulcans hold dear." Apparently they don't teach basic Vulcan history at Starfleet.
Lincoln has no clue about transporters and taped music, but he handles walking through the doors quite well - a 19th century man would probably stop before getting to them and look for or reach for a doorknob, but Lincoln just walks on through.
Yarnek: It would seem that evil retreats when forcibly confronted.
Surak: I am pleased to see that we have differences. May we together become greater than the sum of both of us.
Kirk: How many others have you done this to? What gives you the right to hand out life and death?
Yarnek: The same right that brought you here - the need to know new things.
Lincoln: One matter further, gentlemen. We fight on their level. With trickery, brutality, finality. We match their evil. I know, James. I was reputed to be a gentle man. But I was commander in chief during the four bloodiest years of my country's history. I gave orders that sent a hundred thousand men to their death. at the hands of their brothers. There is no honorable way to kill, no gentle way to destroy. There is nothing good in war except its ending. And you are fighting for the lives of your crew.
Kirk: Your campaign, Mr. President.
Kirk: Your Surak is a brave man.
Spock: Men of peace usually are, Captain. On Vulcan, he is revered as the father of our civilization. The father image holds much meaning for us.
Kirk: You show emotion, Spock?
Spock: I deeply respect what he has accomplished.
Surak: The face of war has never changed, Captain. Surely it is more logical to heal than kill.
Kirk: I'm afraid that kind of logic doesn't apply here.
Surak: That is precisely why we should not fight.
Lincoln: Do you drink whiskey?
Kirk: Occasionally. Why?
Lincoln: Because you have qualities very much like those of another man I admire greatly - General Grant.
Lincoln: For an illusion, my opponent carried a considerable punch. Oh, I forgot. You consider me an illusion too.
Kirk: You were notorious, Colonel Green, for striking at your enemies in the midst of negotiating with them.
Green: But that was centuries ago, Captain, and not altogether true. There is much I would change now if I could. Don't let prejudice and rumors sway you. (starts an ambush)
Kirk: You're somewhat different than the way history paints you, Colonel Green.
Green: History tends to exaggerate.
Spock: It is not logical that you are Surak. There is no fact, extrapolation of fact or theory. which would make possible...
Surak: Whatever I am, would it harm you to give response?
Kirk: The very reason for the existence of our starships is contact with other life. Although the method is beyond our comprehension, we have been offered contact. Therefore, I shall beam down.
McCoy: You're the science officer. Why aren't you, well...doing whatever a science officer does at a time like this?
Scotty: Lincoln died three centuries ago hundreds of light-years away. (points)
Spock: (helpfully pointing a different way) More that direction, Engineer.
McCoy: Jim, I would be the last to advise you on your command image.
Kirk: I doubt that, Bones, but continue.
McCoy: Where the devil are they?
Scotty: Probably looking up haggis in the galley.
Lincoln: What a charming Negress. Oh, forgive me, my dear. I know in my time some used that term as a description of property.
Uhura: But why should I object to that term, sir? In our century, we've learned not to fear words.
Lincoln: A most interesting way to come aboard, Captain. What was the device used?
Kirk: An energy-matter scrambler, sir. The molecules in your body are converted into energy, then beamed into this chamber and reconverted back into their original pattern.
Lincoln: Well, since I'm obviously here, (pats himself on the chest) and quite whole... (Kirk chuckles) ...whatever you mean apparently works very well indeed.
Scotty: President Lincoln, indeed! No doubt to be followed by Louis of France and Robert the Bruce.
Kirk: If so, we'll execute appropriate honors to each, Mr. Scott.
Lincoln: I have been described in many ways, Mr. Spock, but never with that word.
Lincoln: No need to check your voice telegraph device. Do I gather that you recognize me?
Kirk: I recognize what you appear to be.
Lincoln: And appearances can be most deceiving, but not in this case, James Kirk. I am Abraham Lincoln.
This marked the last performance given by Nichelle Nichols as Lt. Nyota Uhura until the animated series.
The century in which the series was set was still vague at this point and Scotty's line that Lincoln died three centuries ago (the nineteenth century) suggests the show was set in the twenty-second century, rather than the twenty-third. The episode "Tomorrow is Yesterday" implied this as well.
This episode first introduces Surak of Vulcan, the Klingon leader Kahless the Unforgettable, and the infamous Colonel Green. These characters are later mentioned in other series and films.
(Translation) Vulcan: [Knome] English: [All]