When Lester-as-Kirk sits in the captain's chair, Chekov vanishes/reappears in different shots of the bridge.
Spock claims complete
entity transfer has never been done anywhere in the galaxy - they
did it in "Return
to Tomorrow" with Sargon and the others.
How is Lester-as-Kirk going to get Kirk's safe open? She doesn't have his memories of the combination or anything and it uses a number sequence to open.
Lt. Galloway was the character killed by Captain Tracey in "The Omega Glory" and yet here he is! Maybe he had a twin brother?
Chekov mistakenly
claims that General Order 4 is the only death-penalty exception
left in Starfleet. It is in fact General Order 7, prohibiting contact
with Talos IV, established in "The
Menagerie, Part I".
Lieutenant
Uhura does not appear in this episode. She is the only "regular
castmember" not to appear.
There has
been much debate over Janice Lester's line of "Your world of
starship captains doe not allow women", implying that women
could not be starship captains. However, with the appearance of
a female captain in "Star Trek IV: The Voyage Home", Captain
Kathryn Janeway on "Star
Trek: Voyager" and Captain Hernandez on "Star
Trek: Enterprise", that line has since been refuted. The
most common explanations are that Lester was speaking figuratively;
that ship captains (mainly male ones) have no time for women. Another
common explanation is that Lester's mental condition led her to
believe the only reason she could not attain command was because
she was a woman.