Answer (1 of 14): The term “continuity error” gets thrown around a lot in reference to Trek, oftentimes erroneously.
Some of the most famous “continuity errors” can be explained with a little imagination and common sense.
WHY DOES KHAN KNOW CHEKHOV IF CHEKHOV WASN’T INTRODUCED TO STAR TREK UNTI...
Weren’t the Borg originally meant to be those worm-parasite things?
That belief stems back to the publication of the Star Trek Chronology (2nd edition), and it might be true, but I’ve never actually seen direct confirmation from any of the writers involved.