Early on, when Kirk is calling from the Exeter's engineering section to the rest of the ship, we see various shots of different parts of the ship. One of those shots is of an empty engineering deck, which makes no sense - that is where he is calling from. Also, the two shots of the curved corridors are the same corridor, just shot from different ends.
Dr. Carter's shirt is a lightened olive color during his last log entry right before his death, but when Kirk looks down at his crystallized remains, the shirt is definitely a light blue.
There is no mention that Sulu and the two security guards must remain on the planet surface for a while to get full immunization. Otherwise Sulu and the guards would have brought the disease to the Enterprise. And would therefore suffer the same fate as the Exeter crew. All they show is the crew leaving the room with Kirk admiring the flag followed by the Enterprise leaving orbit.
The Comms are intended to be analogues of communist Chinese, but they carry Japanese katana swords.
Tracey asks, "How long would a man live if all disease were erased?" What would happen is that the immune system would break down and cause autoimmune diseases without something to fight, just as muscles atrophy due to lack of use.
Dr. Carter makes his last surgeon's log entry from the bridge, specifically, the Captain's chair. This makes no sense. Why is he not in Sick Bay, working on a solution to the infection? If he was the last command-grade officer still alive, it might make sense. However, being the ship's Chief Medical Officer, he would have been one of the first people that had not been in the landing party to make contact with the landing party as they died. Therefore, it would be highly probable that he would have been one of the first infected, and would have died early on in the epidemic. Note that no indication of the method of transmission of the disease is given, but even if it was airborne, it is still logical to assume the above.
On the other hand, it is reasonable to expect that any crew boarding the ship to investigate would go to the bridge first (probably materializing there on transport), so a warning message would be more effective where it's most likely to be seen earlier. There is also missing information here. Dr. Carter might have recorded more than one message; he may have been waiting for an analysis of the disease to be completed; also unknown is whether the infection progressed at the same rate in all individuals; Dr. Carter may have had some natural resistance that kept him alive a bit longer.
On the other hand, it is reasonable to expect that any crew boarding the ship to investigate would go to the bridge first (probably materializing there on transport), so a warning message would be more effective where it's most likely to be seen earlier. There is also missing information here. Dr. Carter might have recorded more than one message; he may have been waiting for an analysis of the disease to be completed; also unknown is whether the infection progressed at the same rate in all individuals; Dr. Carter may have had some natural resistance that kept him alive a bit longer.
The Kohms claim to be 1000 years of age. The fact interstellar travel has only been possible for Earth for 200 years at this time is not relevant, since this culture developed independently from Earth or the rest of the Federation (much of which had space travel before Earth).
When Kirk and Cloud William are twisting the iron bars in their jail cell, they are actually working against one another at times. At certain points one is twisting clockwise while the other is twisting counter-clockwise.
Flipped shot: at the tribunal, Kirk's hair is parted stage-left instead of the usual stage-right.
Near the beginning, Kirk tells Sulu to go to magnification 3. In the remastered Blu-ray version, nothing changes on the view screen.
Costume designer William Ware Theiss gave Exeter uniforms, worn by Captain Tracy and the dying medical officer in the recording, a different breast insignia instead of the familiar Delta insignia. Theiss mistakenly believed each Starship had its own breast insignia. Producer Bob Justman sent Theiss a memo that explained this was not the case.
However, this caused a belief by millions of Star Trek fans worldwide that each ship in the Fleet had its own insignia in the original series era.
However, this caused a belief by millions of Star Trek fans worldwide that each ship in the Fleet had its own insignia in the original series era.
Although the Yangs are depicted as dirty savages, the hypnotized Sirah reveals oddly clean, well-manicured hands as she picks up the communicator.
When Dr. McCoy analyzes the crystals on the U.S.S. Exeter, he identifies them as the crew members' bodies after water is removed. He says the human body is 96% water and does a tricorder analysis of the remaining 4% and reports it as 35% potassium and 18% carbon. His percentages are either wrong mathematically or physiologically. The 96% figure refers not exclusively to water but organic elements, which includes body fat and sugars in addition to water. While carbon does account for 18% of the total body mass, after removing water the percentage should have been 74%. The content of the minerals is also incorrect. Calcium accounts for 38% and potassium accounts for 10%, not the stated 35%.
When Kirk is stating in his Log who shall beam down to the planet, he says "Lt. Galway" but the character's name is "Lt. Galloway."
When the Enterprise landing party take their places in the transporter chamber, they are as usual all facing forward, with Spock assuming what is called the "parade rest" posture (arms behind his back, though usually with elbows/forearms forming precise triangles). But on their appearance aboard the Exeter, only Kirk is still facing forward with the others (especially Lt. Galloway at a complete 90-degree angle) more oriented toward their left.
The Comms are intended to be analogues of communist Chinese, but they carry Japanese katana swords.
Spock makes reference to the "Kohms" as representative of Terran "Asians" i.e. Chinese Communists - which they all blatantly are oriental - but the term "Yang" which is "deduced" to be a permutation of "Yankee," is itself an Asian name.